Which of the following is not equivalent to cos(0 + 0)? cos 8 cos 0- sin 60 sin 0 1- 2 sin? 0 O Option 1 O Option 2 2 cos? 0 – 1 sin? 8 – cos? e Option 3 Option 4

Q: COS (+3 O cos x Ocos 2x O sin a Ocos z +x) + cos (-) is equivalent to:

A:

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: What is an equivalent expression in terms of sine for cos(68)?

A:

Q: b. What is the range of y = sin-12x? %3D

A:

Q: A 17 8 B 15 sin(A) = type your answer. - cos(A) = type your answer. - and tan(A) = type your answer.

A:

Q: What are the differences between cosx and cos ¹x

A:

Q: e csc 20 In (ecos 2 ) Ince cos CoS 20 28) Sin2 20 OP

A: Given integral is ∫ecsc2θlnecos2θsin22θdθ since lnex=x, so lnecos2θ=cos2θ The integral becomes…

Q: Find the value of 2 sin2 30° tan 60° – 3 cos2 60° sec2 30°

A:

Q: If cos a + cos B= a and sina + sin B= b, then show that 2 sin 2a + sin 2B = 2ab 1 a2 + b2

A: given: cosα+cosβ=asinα+sinβ=b we have to show that  sin2α+sin2β=2ab1-2a2+b2 R.H.S: 2ab1-2a2+b2…

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

A:

Q: Which of the following is the simplified expression of 1- 1 sece sin²e cos²0 O tan²e O sec²9 cose?

A:

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

A: The first fill in the blank is wrong.

Q: Evaluate V2 cos sin-! 2.

A:

Q: What is cos(A)? 13 12 cos(A) = [ ? COS

A:

Q: Which of the following is TRUE? A. sin? 을 + cos? 을=D 1 2 B. sin 20 + cos² 20 = 2 %3D C. sec2 - tan?…

A: Solving LHS and comparing to RHS

Q: is it right to say cos (60o-30o) = cos60o .cos 30o+ sin60o.sin30o?

A: cos(A-B)=cosA.cosB+sinA.sinB

Q: Determine the value of sin a + cos a for a = 40 degrees. Check Answer

A: Using fundamental identity of trigonometry.