Question 3 Given cos(0)= cos(20)? A B C D -21 00/10 5 7 25 16 25 -4 IT 2 <0

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

A:

Q: True or false: If cos A is negative, then cos (A/2) is negative as well.

A:

Q: QUESTION 2 For cos2(xy) =- evaluate y when x = 1. 4 3 6. 3

A:

Q: 4 cos x + 2 sin r = 2 COS

A: As we know, Sin2x + cos2 x = 1 Since the interval is not given so we have to find general solution

Q: cos(20) = cos? e - 1 = 1 - sin? 2 2 1 Cos e tan

A: Given

Q: cos x csc3 x + C sin4 x 1.

A: To evaluate the given integral.

Q: S sin° (3t) cos(3t)dt Evaluate COS

A: To determine the value of the integral.

Q: |CoS tan-1 24 1꼭 + cos. -1 3

A:

Q: Show that os (2 tan~ r) COs

A: We have to prove that cos(2tan-1x)=1-x21+x2.

Q: 15 9. M 12 P.

A:

Q: Cos(10+x)

A: Here , We will apply the formula of Cos ( A+B) Cos(A+B) = [CosA CosB - SinA SinB ]

Q: 6T cos 8 de : so O o o O

A: Here we will solve the  given integral,

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

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Q: COs o + Sin O = Sec0-tan Sec o CSoco

A:

Q: s cos 3ede CoS |- sinb

A: follow next step

Q: Question 5 of 11 (3x-2+tanx-4)dx= O A. -4+ OB. -3x-2+sec²x + C +tant-4 C. 6x-2+tanx-4 OD.…

A: Given;  The integration of derivative of (3x-2+tanx-4).

Q: Why is I cos 0 |never greater than 1 in the first place?

A:

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

A:

Q: cos3θ+cos4θ=0.

A: Consider the given equation, cos3θ+cos4θ=0 By using the formula, cos(a + b) + cos(a - b) =…

Q: Cos 0/2 -cos 0=1

A:

Q: 3 Evaluate: cos (sin¯ )) without using 10 calculator..

A:

Q: Q#12 Please prove that cos(a-ß) cos(a+ß) = (cosa cos 6)²-(sina sin 6)²

A: To prove: cos(α-β)cos(α+β)=(cosαcosβ)2-(sinαsinβ)2

Q: 1 Cos(2) COS is equal 2]

A:

Q: cos (0+ 90)

A: Given: cos0+90

Q: Select everything below which is POSSIBLE; don't select anything IMPOSSIBLE OA number xr where…

A: (a) We know that the value of sinx lies between -1 to 1 i.e -1≤sinx≤1 Therefore, sinx=-1 is…