Write the expression as the sine, cosine, or tangent of a double-angle. Then find the exact value of the expression. cos 2105° - sin2105° Which expression is cos2105° - sin2105° equal to? Select the correct choice below and fill in the answer box within your choice. (Simplify your answer. Type your answer in degrees. Use integers or decimals for any numbers in the expression.) A. cos 2105° - sin 2105° = ce = cos B. cos2105° - sin2105° = sin C. cos s 2105° - sin2105° =ta tan The exact value of the expression is (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression. Rationalize the denominator.)

Q: Write the expression as the sine, cosine, or tangent of an angle. tan(1.9) – tan(4.2) 1 + tan(1.9)…

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Q: Write the expression as the sine, cosine, or tangent of an angle - sin x cos 2x + cos x sin 2x

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Q: Write the following expression as the​ sine, cosine, or tangent of a double angle. Then find the…

A: Given expression is : 2sin45°cos45° Here above expression can be be written as sine double angle as:…

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A: Given that: -cos2θ(1-sec2θ)

Q: If the sine of an angle is 2425, what is the sine of the angle's complement? 24 25

A: See the details solution in below

Q: Write the expression as the sine, cosine, or tangent of a double-angle. Then find the exact value of…

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Q: Write the expression as the sine, cosine, or tangent of an angle. sin 70° cos 5° + cos 70° sin 5°

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Q: Write the expression as the sine, cosine, or tangent of an angle. tan(1.1) – tan(4.7) 1 + tan(1.1)…

A: Given expression is, tan(1.1)-tan(4.7)1+tan(1.1)tan(4.7)

Q: Using your calculator, find ∅ to the nearest degree if the sin of ∅ = 0.6691

A: Given: sinϕ=0.6691 To evaluate: The value of ϕ in degree.

Q: Write the expression as the sine, cosine, or tangent of an angle. sin 60° cos 5° + cos 60° sin 5°

A: The following formula is used in solving the given function.

Q: Write the following expression as the sine, cosine, or tangent of a double-angle. Then find the…

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Q: Write the expression as the sine, cosine, or tangent of an angle. tan(7/15) + tan(4z/5) 1 –…

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Q: Use words to describe the formula for, "the sine of double an angle."

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Q: Find the sine, cosine, and tangent of each acute angle of the triangle. Leave answers in simplest…

A: We will find the sine,cosine and tangent of the acute angles in the following step

Q: Write the trigonometric expression in terms of sine and cosine, and then simplify. cos?(e) (1 +…

A:

Q: Write the expression 2 sin 15° cos 15° as the sine, cosine, or tangent of a double angle. Then find…

A: The given expression 2 sin 15° cos 15°   Formula: sin2x=2sinxcosx

Q: Write the trigonometric expression in terms of sine and cosine, and then simplify. csc²(x) – cot?(x)

A: Given, csc2x - cot2x   We have to write the expression in terms of sine and cosine and simplify.…

Q: Write the expression as the sine, cosine, or tangent of an angle. Then find the exact value of the…

A:

Q: Evaluate the sine, cosine, and tangent of the angle without using a calculator. (If an answer is…

A:

Q: Write the expression as the sine, cosine, or tangent of an angle. 3 COS sin)sin() COS - 7

A: Note that: cos x cos y-sin x sin y=cos (x+y)

Q: Write the expression as the sine, cosine, or tangent of an angle. Then find the exact value of the…

A: Here given Use the compound angle formula

Q: Write the expression as the sine, cosine, or tangent of an angle. tan 130° − tan 80°/1 + tan 130°…

A: Using tan(a-b) =tan(a) - tan(b) /(1+tan(a) tan(b)

Q: Write the expression as the sine, cosine, or tangent of an angle. cos 140° cos 20° – sin 140° sin…

A: Given expression is cos140°cos20°-sin40°sin20° we have to write the expression as the sine , cosine…

Q: Write the expression as the sine, cosine, or tangent of an angle. co() co() - sin(4) an() 5

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Q: Write the expression as the sine, cosine, or tangent of an angle. Then find the exact value of the…

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Q: Write the following expression as the sine, cosine, or tangent of a double angle. Then find the…

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Q: Write the expression as the sine, cosine, or tangent of an angle. cos 110° cos 50° - sin 110° sin…

A: Given the expression  Cos 110° Cos 50° - Sin 110° Sin 50°  we need to solve this. As we know that…

Q: Write the expression as the sine, cosine, or tangent of an angle. cos cos - sin sin 5

A: We know that  cosA+B=cosAcosB-sinAsinBA=2π7B=7π5

Q: Find an angle 0 with 0° < 0 < 360° that has the same: Sine function value as 250° 0 = degrees Cosine…

A: Given query is to find indicated angle.

Q: Write the expression as the sine, cosine, or tangent of an angle. tan(t/20) + tan(4/5) 1- tan(1/20)…

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Q: Which of the following angles would have the same sine value as a 254 degree angle? 286 degrees -254…

A: An angle is given whose value is 254o. We have to matched the sine value of an angle from the given…

Q: Find an angle 0 with 0° <0< 360° that has the same: Sine as 260°: 0 = degrees %3D Cosine as 260°:…

A: Use the trigonometric identities and solve for other theta. Sin( 270° - θ ) = Sin( 270° +  θ )…

Q: Write the trigonometric expression in terms of sine and cosine, and then simplify. cos?(e) (1 +…

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Q: Evaluate the expression without using a calculator. sin−1(cos(2?))   answer in radians, please

A: Given the trigonometric expressionsin−1(cos(2π))

Q: Write the expression as the sine, cosine, or tangent of an angle. sin(x) cos(8x) + cos(x) sin(8x)

A: Sin (A+B) = Sin A x Cos B + Cos A x Sin B

Q: Write the expression as the sine, cosine, or tangent of an angle. 47T cos 47T sin CoS sin

A:

Q: Write the expression as the sine, cosine, or tangent of an angle cos 140° cos 50° – sin 140° sin 50°

A: Formula:

Q: Write the following expression as the sine, cosine, or tangent of a double angle. Then find the…

A: Given:       2sin75∘ cos75∘

Q: Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula. (a) cos? 38° - sin?…

A: Since you have asked multiple questions in a single request, we would be answering only the first…

Q: Write the expression as the sine, cosine, or tangent of an angle. 6T sin 5. CO COS 7 - sin 7

A: Here we have to use the trigonometric identity

Q: Write the expression as the sine, cosine, or tangent of an angle. sin cos 7 cos 5 sin 5

A: Consider the given expression as, E=cos4π7cos7π5-sin4π7sin7π5 Consider the required formulae,…

Q: Write the expression as the sine, cosine, or tangent of an angle. co(즉) Co()-sin(즉) an(쓸) 4л 2л 5

A: The given expression is cos2π7cos4π5-sin2π7sin4π5. Write the expression as the sine, cosine, or…

Q: Write the expression in terms of sine and cosine, and simplify so that no quotients appear in the…

A: The given expression is  (1 + cotθ)(1 - cotθ) - csc2θ

Q: Write the following expression as the sine, cosine, or tangent of a double angle. Then find the…

A: Known fact: sin2θ=2sinθcosθ

Q: Simplify the expression by using a Double-Angle Formula or a Half-Angle Formula. 1- cos(30°) 2 (a) 1…

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Q: Use the Law of Sines to find the indicated side x. (Assume a = 155. Round your answer to one decimal…

A: Here a=155we find the side x

Q: Write the expression as the sine, cosine, or tangent of an angle. tan 24° + tan 22° 1- tan 24° tan…

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Q: Write the expression sin 25° cos 5° + cos 25° sin 5° as the sine, cosine, or tangent of an angle.…

A: Given that sin25°·cos5°+cos25°·sin5°   It known that sinA+B=sinA·cosB+cos A·sinB By using this…

Fundamentals of Trigonometric Identities

Trigonometric Identities are the equalities that involve trigonometry functions and hold for all the values of variables given in the equation.