Use the even–odd properties to find the exact value of each expression.Do not use a calculator. sin(-90°)

Q: Use the Half-angle Formulas to find the exact value of each expression. cos(- 3π/ 8)

A: Half-angle Formula: 1+cosθ=2cos2θ2.

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

A:

Q: Find the exact value of each expression.Do not use a calculator.

A: In a right triangle cosine of an angle is equal to ratio of base to hypotenuse. The sine of an angle…

Q: Use reference angles to find the éxact value of the following expression. Do not use a calculator.…

A:

Q: Use an Addition or Subtraction Formula to simplify the equation. cos(?) cos(2?) + sin(?) sin(2?) =…

A: cos(x)cos(2x)+sin(x)sin(2x)=22[Formula cos(A)cos(B)+sin(A)sin(B)=cos(A-B)…

Q: Evaluate each expression without using a calculator, and write your answers in radians.       tan -1…

A: Consider the given expression: tan-11 Let tan-11=x, Solve:…

Q: Write an algebraic expression that is equivalent to the expression sin(arccosa)

A: Let arccos x = y

Q: Simplify the expression and identify which identity is used in each line of the equation. b. csc20…

A: Simplify

Q: Write the trigonometric expression in terms of sine and cosine, and then simplify. 2 cos(t) tan(t)

A: The given trigonometric expression is,

Q: Write the first expression in terms of the second if the terminal point determined by t is in the…

A:

Q: Determine the value of each angle to the nearest degree   sin A = 0.1265

A:

Q: Write the first expression in terms of the second if the terminal point determined by t is in the…

A: Trigonometric function positive in negative in sin(t) I, II quadrant III, IV quadrant cos(t) I,…

Q: Use the "half-angle" formulas to find the sine and cosine of 15 degress.

A:

Q: Need help

A:

Q: Evaluate. Write your answer as an integer or as a decimal rounded to the nearest hundredth sin 86°…

A: Please see the answer in step 2.

Q: Use reference angles to find the exact value of the expression. Do not use a calculator. 1. csc…

A:

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

A:

Q: Complete the half-angle identity. sin 스 =

A: To express sin(x/2) in terms of trigonometric ratios of x.

Q: Write the trigonometric expression in terms of sine and cosine, and then simplify. sin(0) – csc(0)…

A:

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

A:

Q: Find the exact value.sin 195°

A: Find the exact value.      sin 195°

Q: find the exact value of (a) and (b). Do not use calculator. (a) sin(-150°) (b) cos(270°)

A: Find the exact value of: (a) sin-150° (b) cos270°   Here we use the formula:…

Q: Find the exact value of each expression.Do not use a calculator.

A: Given expression: 6 cos3π4+2 tan-π3 We can write the above expression as 6 cosπ2+π4+2 tan-π3

Q: arccos(-root2/2)

A: Here we use basic trigonometric values.

Q: Evaluate the expression without using a calculator and write your answer in radians. arctan (-√3/3)…

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: If cose=-6 and 0 is in the third quadrant, find the exact value of sin0 13

A:

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 first expression in terms of the second if the terminal point determined by t is in the…

A:

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

A: Given information:

Q: Click an item in the list or group of pictures at the bottom of the problem and, holding the button…

A:

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

A: Simplification

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: Use reference angles to find the exact value of the following expression. sin 6

A:

Q: pole rope to A tan(x) = 3. tan 4 3/4 3.

A: to find the value of x.

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

A:

Q: Write the trigonometric expression in terms of sine and cosine, and then simplify. csc(0) – sin(0)…

A: Write the trigonometric expression in terms of sine and cosine, and then simplify…

Q: Use reference angles to find the exact value of the expression. Do not use a calculator.

A: We have to find exact value of the expression: sin-35π6 We know that sin-θ=-sin θ Therefore,…

Q: Write the expression as the sine, cosine, or tangent of an angle. tan 120° - tan 80° 1 + tan 120°…

A: Given that

Q: Using your calculator, enter the decimal value for each. Round to the nearest ten - thousandth 1)…

A: 1)Sin 68o =?

Q: Use a double-angle formula to rewrite the expression. 6 cos? x - 3

A:

Q: (4) Use the angle subtraction formulas to find the sine and cosine of 15°.

A:

Q: Use an appropriate Half-Angle Formula to find the exact value of the expression. COS

A: We can answer the question as below using half angle formula.

Q: Use a reference angle to find the exact value of the following expression. Do not use a calculator.…

A: Given,  sin(225°)

Q: Write the trigonometric expression in terms of sine and cosine, and then simplify. csc(8) – sin(8)…

A:

Q: Evaluate the expression without using a calculator, and write your answer in radians. arccos 1 2.…

A:

Q: Evaluate the following expression. arccsc(/2) Provide your answer below: Radians

A: We can find the answer as below.

Q: write the trigonometric expression in terms of sine and cosine and then simplify tan2x - sec2x

A:

Trigonometric Identities

Trigonometry in mathematics deals with the right-angled triangle’s angles and sides. By trigonometric identities, we mean the identities we use whenever we need to express the various trigonometric functions in terms of an equation.

Inverse Trigonometric Functions

Inverse trigonometric functions are the inverse of normal trigonometric functions. Alternatively denoted as cyclometric or arcus functions, these inverse trigonometric functions exist to counter the basic trigonometric functions, such as sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant (cosec). When trigonometric ratios are calculated, the angular values can be calculated with the help of the inverse trigonometric functions.