and Cos B are the s

Q: If cos z = 2, find‌‌

A: As per the question, we are taking cos z = 2. We know that                   cos 3z=4 cos3z - 3 cos…

Q: What is the exact value of the COS ZXY Z? X 6. 7 8

A: Topic :- Triangle

Q: Verify the identity. (1 + cos B)(1 – cos B) csc² B

A:

Q: 4 cos 3

A:

Q: Given that cos(x)=−1/2, what is cos(−x)?

A: Topic :- Trigonometry Answer cos(-x)= -1/2

Q: If cos 0 = 13 a and e EQIV, find csc 0. 13 csc e = 3 csc e = 11 csc e = 13 13 csc e = %3D 11 csc e =…

A:

Q: A C equivalent to cos A.

A:

Q: 14. eax cos E

A:

Q: 0 cos n0 do

A:

Q: Evaluate cos[toi an 3.

A:

Q: Use the figure below to compute cos a. В 7 4 a A 10

A:

Q: If cos A= 21/3 and A is between 90° and 180°, find   cos A/2

A: Given cos A = 21/3    A is between 90° and 180°.   We know cos θ ∈ [-1, 1]

Q: 4.) Prove the identity. csc e Csc 20 2 cos e

A:

Q: b) cos 2B

A: using  cos(2B)=cos2B-sin2B ....(1)

Q: Determine the value of cos t when t = 5π, -2π, 17π/2,-13π/2.

A: cos t when t = 5π, -2π, 17π/2, -13π/2. We know that cos(A + B) = cos A cos B - sin A sin B cos (5π)…

Q: Verify the identity. (1-cos^2 B)(1+cot^2 B)=1

A: Topic = Trigonometry

Q: 7 4 CO 5 3.

A: we have to find left hand limit and right hand limit if both equal  then limit exist

Q: Verify the identity, show all steps. cos z+1 1+ sec x COS T ||

A:

Q: Find cos e if (1, –3) is a point on the terminal side of 0.

A:

Q: Find cos Co + u given that COs o =) se3z and cos =3. and that & and 4 are between O and /2.

A: Follow the steps.

Q: If cos A = with A in QIV, find the following. 2. sec A

A: To find the value of the following half angle,

Q: Cos (2 on36)

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

Q: Verify the identity. cos² t sin t -=cos tcot t

A: We have to Verify the given  identity cos2tsint=cost cott

Q: Let cos A = 2/√5 with A in QI and find sin(2A)=

A: In Q1 , sin is positive  So,

Q: 27 cos 0 de O 1 6.

A: Using definite integral.

Q: Verify the identity sin(+e) - cos e

A: Given : sin ( 3π/2 + θ ) = - cos ( θ )

Q: If cos (A) = 1/2 with A in QIV, find cos (A/2). cos (A/2) =

A: cos(A)=1/2 A=cos-1(1/2) A=60o A is in iv quadrant so A is negative So, A=-60°

Q: What is the formula for cos (A/2)

A: We have to find a formula for cosA2

Q: Verify the identity: cos t/(cot t - 5cos t) = 1/(csc t - 5)

A: To verify the identity: costcott-5cost=1csct-5 Solving the left hand side.…

Q: If cos A  = 1/2 with A ,find the following  cosec A/2

A: Given:                     cos A=12   To determine:                     cosec(A2)=?   Solution:…

Q: Find cos A

A: Explanation of the solution is given below...

Q: Find the indefir COS cos ( TX ) di 3

A: The given integral is , ∫cosπxsin3πxdx Substitute u→sinπx. dudx=πcosπx dx=1πcosπxdu Therefore the…

Q: find cos (s + t) and cos (s – t).

A:

Q: Find the exact value of cos. O undefined 1/2

A:

Q: If cos A  = 1/2 with A ,find the following  cos A/2

A: We have, cos (A)=12.  Applying the trigonometric identity cos (2A)=2 cos2(A)-1, and making the…

Q: if csc a = √10 and a is in QII, find cos 2a

A: We have to find cos angle

Q: Find cos e.

A:

Q: If cos A= 21/3 and A is between 90° and 180°, find   cos 2A

A:

Q: find the exact value cos22.5o

A: To find the exact value of cos22.5o

Q: メ dh ト2 2* CoSメ-en布 メ=tャ itS and

A: According to the guidelines issued by the company We are supposed to answer only one question.…

Q: Give an example of values a, b such that (a) cos(a + b) + cos a + cos b cos a (b) cos 2

A:

Q: do a) " (a > 1); t a + cos 9

A: By Bartleby policy I have to solve only first one as these are unrelated problems.These are…

Q: Find cos A in the right triangle below.

A:

Q: Suppose s is a real number such that sin s = - and cos s > 0. Find cos s

A: Given                     sin(s)=-35  and cos(s)>0…

Q: Find cos C if a = 8, b = 7, and c = 15.

A: If the sum of squares of two sides is equal to the square of the third side, then these types of…

Q: If  cos A= 1/2 with A in QIV, find cos(A/2)

A:

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.