What is the exact value of cos⁡15∘?

Q: If sin²0 3 find all possible values for 0, where -180° < 0 < 180°.

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Q: Evaluate without using a calculator.     tan    -1 ( tan 4 pi/3)

A: The given expression is tan-1tan4π3

Q: Use a calculator to approximate the value of the expression arccot 15.5, if possible. Round your…

A: The expression is the inverse cotangent function of 15.5. This expression basically means to find…

Q: Find the exact value.Do not use a calculator. sec(8 π)

A: Here given  sec 8π

Q: Find the exact value of the expression.   sec^-1(-1)

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Q: Lax' + xv9 – x² dx

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Q: Find the exact value of tan (75°). Hint: 75° = 45° + 30° %3D .

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Q: Evaluate the exact value of 4 /5 tan sec 4

A: The objective is to evaluate the exact value.

Q: Which expression is equal to (icnx - 1)/(tan x + 1) using identities ?

A: The given question is taken from the tringnometry in which we have to find the equalent form of the…

Q: Find the exact value of csc(-pi/2) . No decimals and be specific how you found it.

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Q: 18. Using a calculator, tan (÷)~0.0078.

A: We have to find the error

Q: Use a special right triangle to write tan60∘ as a fraction.

A: First we draw the triangle and then we assume every part of the triangle and using Pythagoras…

Q: Find the exact value of the expression. 213 sec 3

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Q: Evaluate tan 330°

A: To find tan330°

Q: Find the exact value of sec(-315°)

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Q: 3. sec-1 -tan- 4

A: Given: sec-1(-tan3π4)

Q: The expression 1 + tan² x is equivalent to

A: Here given expression 1+tan²x we know that tanx = sinx/cosx and sin²x+cos²x=1 So tan²x = sin²x/cos²x…

Q: e frequency of a sound is defined as

A: Here use definition of frequency of sound

Q: Use the Pythagorean Theorem to calculate the value of to 1 decimal place.

A: The length of sides of the triangle are  x and 22 Hypotenuse = 7

Q: for which values of t

A: For span to exist, determinant of Matrix should be equal to zerom

Q: One can convert temperature from Kelvin into Fahrenheit using the formula . What is the temperature…

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Q: Find the exact value of the expression sec 22π/3. Do not use a calculator.

A: Given- sec22π3 To find- the value of the trigonometric expression. Formula used- secnπ-θ=secθ

Q: Which expression is equal to secxsinx/cotx+tanx using identities?

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Q: 2. Find the exact value of the expression. tan(10⁰) + tan (20⁰) 1-tan(10°) tan (20⁰)

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Q: Evaluate, tan(3 + 4i)

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Q: Determine the value of x in the figure. 150° to

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Q: What is the difference between Za and Ta

A: Z alpha is the test to calculate the confidence interval in which the data and its observed sample…

Q: Give the reciprocal of the given number. 3x

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Q: Find the exact value of the expression sec 11π/6. Do not use a calculator.

A: Consider the following expression: sec11π6=sec2π-π6 Use the following formula: sec2π-θ=secθ…

Q: Find the exact value.csc π/8

A: The value of cosecπ8 can be calculated as, cosecπ8=1sinπ8 The value of sinπ8 can be calculated as,…

Q: Find the exact value of the expression tan (4π/3 - π/4).

A: Trigonometry:      tan(4π3-π4)We know     tan(a-b)=tana-tanb1+tan a tan b

Q: Calculate the missing value. Use the Pythagorean Theorem!

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Q: Evaluate the following expression over the interval [−π/2,π/2]. arcsin(−√3/2)

A: Given: arcsin(-32)

Q: Give the exact value of CSC

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Q: tan 225° equals

A: Trigonometric value

Q: The expression sec (z) - tan (z) is equivalent to

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Q: Solve the problem using the sum or difference identities

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Q: Evaluate the expression tan2 1.4 - sec2 1.4, without using a calculator.

A: Given:tan21.4-sec21.4

Q: cas 5Tm 3w + sin tan tan

A: We will use the values cos 5π6 = cosπ-π6= -cosπ6= -32tan π6 = 13sin5π3 = sin 2π-π3= -sin π3= -32tan…

Q: 41. sec-1 2V3

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Q: Using an appropriate substitution | tan³x sec7xdx is equal to

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Q: Regarding on the letter c, why is it equated to negative gamma?

A: c) The direction ratio of D→-C→ is -2, 5, -5 from part a. D→-C→ is normal to the required plane.…

Q: What are the sum and difference identities and how can they be used to find the values of various…

A: Given problem is solved below in detail.

Q: Simplify the expression cot(sec -1x).

A: Given,          cotsec-1x

Q: Find the exact value of the expression. tan 25° + tan 110° 1- tan 25° tan 110°

A: We have to find the exact value of the given expression: tan 25°+tan 110°1-tan 25° tan 110° We know…

Q: Find x if it is the measure of an acute acute in a right triangle and tan x =0.7846.

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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.