-5T cos 6.

Q: Find the exact value of the expression. -1 15 cos tan 8

A: The given expression is costan-1158. It is known that, cosarctanx=1+x21+x2.

Q: Solve 5 cos x + 7 = 2 sec x for x E [0, л). Enter your answer in radians correct to 2 decimal…

A: We can transfer the equation into quadratic equation in cosine

Q: If csc(x)=23/2 (in Quadrant-I), find, cos(2x)=

A:

Q: FInd the value of cos15 degree

A:

Q: Use the sin/cos complementary relationship to determine which of the following expression is also…

A:

Q: Solve the equation for , where 0 ≤ ≤ 2…

A: We have to solve the given trigonometric equation.

Q: Find without using tables, the values of cos x and sin x when cos 2x is 7/25

A: cos2x=725

Q: Given that cos(x) = 0.42, what is cos(-x)?

A:

Q: Find cos(θ), if sec(θ)=−2.  Round your answer to four decimal places.

A:

Q: Multiply. (cos(θ) + sin(θ))2

A:

Q: sin 2tan

A:

Q: Find the algebraic expression that is equal to sec theta- cos (-theta)

A: We know thatcos(-θ)=cosθ

Q: Find cos 75 degree

A: We have to find value of cos75°. cos75° can be written as cos75°=cos45°+30° We have identity…

Q: Find a simplified expression for tan( cos-1 ((a)/(6)))

A: Given: y=tancos-1a6 we know that cos-1x=tan-11-x2x                                similarly,…

Q: Find cos(arctan(2))

A:

Q: Find a cofunction with the same value as the given expression. tan -

A:

Q: If cosθ=0.104, find θ, writing your answer to the nearest degree.

A: Use inverse trigonometry ratio

Q: - cos x

A: We know that cosx in 2nd quadrant is negative

Q: Find, the value Cos 20, when: * .cose = 12/13

A: The cosine angle in a right  triangle is ratio of base to the hypotenuse. cosθ=BaseHypotenuse From…

Q: Explain why cos 90° = 0?

A: We have to find out

Q: Find the exact value of cos[tan(-5)-

A:

Q: Find the exact value of the given expression. tan cos-) 0.2425

A:

Q: Find the value of -1 tan cos + tan

A:

Q: Find a simplified expression for cos(tan^-1(r/3))

A:

Q: cos(pt + a).cos (pt+B ).

A: This question is related to trigonometry.

Q: Find the values in

A: Given:

Q: Evaluate sin(9æ)cos(3x)dæ.

A:

Q: Find the exact value of the expression whenever it is defined.

A: (a) sin-1-12=-sin-112                ∵sin-1-x=-sin-1x =-sin-1sinπ6   =-π6                          ∵…

Q: Use a calculator to solve the equation cos x = -4/7 correct to four decimal places, on the interval…

A: cos x is negative in second and third quadrant. For second quadrant, we do 180 - theta, For third…

Q: Find the exact value of cos csc(-

A: Topic = Trigonometric ratios

Q: If cos (cos) 25m = y , Find value of y? 6

A: To find the value of y if cos-1cos25π6. Solution: We know that, cos2nπ+θ=cosθ, where n∈Z. So,…

Q: Find the exact value of cos 285° by using sum or difference formula

A: Given : cos285°

Q: Given x = cosθ, y = cos3θ. Solve the problem based on the image attached.

A:

Q: find the exact value of: cos(2tan-1(9/40))

A: To calculate the exact value of the below expression,

Q: 15 COS 2 tan-1 8.

A: The given trigonometric function is cos2tan-1158. The following trigonometric identities are used in…

Q: Find all solutions in radians using exact values only. 2. COS ²(2x} = 1 +.

A: Square root both sides , then solve both sides by 2x.

Q: Simplify: TO 1. cos- +i sin- 2.-

A: As per guidelines we have to solve one question

Q: Use the formulas for lowering powers to rewrite the expression in terms of the first power of…

A: The key step to solve this question is use the formula- Cos2x=(1+cos(2x))/2

Q: Find the quotient when 20(cos 75 degree + i sin 75 degree ) is di vided by4(cos 40 degree + i sin 40…

A: Given that, 20(cos 75° +i sin 75°)4cos 40° + i sin 75° We can use here,  eiθ = cos θ + i sin θ and…

Q: Find all solutions in radians using exact values only.       cos24x = 1

A: Given : cos24x = 1 cos 4x = √1 cos 4x = ±1   So, We have :       cos 4x = 1, cos 4x = -1   Using the…

Q: What is the range of 4 cos x + 1?

A:

Q: Explain why it is not possible to solve for cos(0) = 3 Use a diagra %3D

A:

Q: cos 6x = 1

A:

Q: cos 0 is negative,

A:

Q: For the given function y = -13 cos(-x – 30°), state:

A:

Q: Given tan θ = - (2/3) and cos θ > 0, find cos θ and csc θ.

A: Given: tanθ=-23cosθ>0 Since tanθ<0 and cosθ>0, that is θ lies in the quadrant.