Question 45 What is the simplified form of sin 82-sin 2r cos 82+cos 22 ? tan(3x) cos(3x) cot(3x) sin(3x) no correct answer

Q: 1 in tan 3 +coS -1

A:

Q: tan(sin-14/5+cos-11)

A: The given trigonometric expression is

Q: Which expression is equal to cos(6t)?

A: Recall:  cos(2t)=cos2(t)-sin2(t)     Given,   cos(6t)

Q: evaluate exactly cos-1(-3/2)

A: -3/2 lies outside the domain of the function. Hence we will have no solution

Q: ises evaluate the expression. 25. sin (2 cos ¹1) 27. cos (2 sin¹) 29. cos (3 sin-¹) -LA ident 26.…

A: The given expression is,

Q: try to simplify (1+ cos²x-Sin²x)(1+tan²x) 20

A:

Q: True or False sin2θ =1- cos2θ.

A: We can prove or disprove trigonometric identities using trigonometric table values of angles . For…

Q: 5TT 2. Cos 6. 2п Cos 3 + sin sin 6 - - - 3 一。

A:

Q: cos(13.6°) = cos(__°)cos(65.2°) + sin(__°)sin(65.2°)

A:

Q: The Equivalent expression of cos (4 A) is

A: we know that sin2A = 2sinA cosA cos2A = 1-2 sin^2 A

Q: sin2(78°) + cos2(78°)

A: Question is based on trigonometric ratios and angels.

Q: 11-12: Simplify. 11. cscß(cosß + sinß) 1. 1+sinx 12. 1. 1-sinx

A:

Q: 1-tan?x 1+tan?x sin2x O cos2x tan2x O ||

A: Explanation of the answer is as follows

Q: Use right triangles to explain why cos-1 x + sin-1 x = p>2.

A: given: a right angled triangle. the given expression is: sin-1(x)+cos-1(x)=π2

Q: (1 + cos ?)(1 − cos ?)=sin2 ?

A: TO SHOW 1−cosx1+cosx=sin2x

Q: do i use difference formula to find out whether the following is positive or negative? cos(x+3pi)

A:

Q: Select the best answer. sin x 1+ cosx + sin x 1+ cosx

A:

Q: Find the value of tan sin 2 3 3 O-5

A:

Q: Verify the identity: 1 1+ sin + 1 1-sin/ = 2+2tan² 0.

A: The given identity is,

Q: Which is NOT equivalent to cos2x? 2 cos²x - 1 cos²x - sin² x 2sinxcosx 1-2 sin²x

A: We have identity  cos2x=cos2x-sin2xcos2x=1-2sin2xcos2x=2cos2x-1sin2x=2sinx cosx

Q: 78. sin² 20 1 + cos 20 = 2 sin²0

A:

Q: Cos230°-(sin30°)² (tan45)².sin90

A:

Q: Knowing that cos(22.5 deg) = (1/2)(square root of 2 + (square root of 2)), find the exact value of…

A:

Q: Cos 0–N1+ Sin 20 Tan 0 Sin 0 –/1 + Sin 20 N.

A: Recall: sin (2θ)= 2 sinθ cosθ sinθ cosθ= tanθ cos2θ+sin2θ=1

Q: prove the identity: 4 sin A cos^3A- 4 sin ^3A cos A

A: The first fill in the blank is wrong.