Find cos 2a if 4 sin a - COS a = 3. 2 sin a + COS a

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

A:

Q: C) Using Double Angle Formulas (plus earlier Trig) Identities to Memorize Save memorizing tangent…

A: We need to fill the table with power reducing formulas and half angle formulas of trigonometry.

Q: Find 10. cos°0 do

A: Given:  Let I=∫0π cos6 θ dθ To Find: To evaluate the given integral.

Q: 4. Which is equal to cos? O sin O COS 2π 3

A: Given :cosπ3

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

A:

Q: Verify the identity: cos2 x - sin2 x = 2 cos2 x - 1

A:

Q: 5 sin a -3 cos a If 5 tan a = 4, Show that 5 sin a +2 cos a 116

A: Given: 5 tanα=4

Q: 5 sin Od0 = -5(cos x – 1). Select one: O True O False

A:

Q: 1+sin x 4 15. Evaluate o cos2 x

A: Integral of sec^2x is tanx and secxtanx is secx

Q: 1 1. Use basic identities to simplify the expression secx cos x + cos x secx

A: Since the student has posted multiple questions and does not mention any specific question, so we…

Q: -5 sin x = -2 cos2 x + 4

A:

Q: 6. Rewrite over a common denominator: 1 /1 - cos v + 1/ 1 + cos v

A: We have given 11-cosv+11+cosv Then, 11-cosv+11+cosv=1+cosv+1-cosv1-cosv1+cosv=21-cos2v=2sin2v

Q: Find the values in

A: Given:

Q: Rewrite the expression cos (0) without using any powers of sin or cos.

A: We have to rewrite the expression cos4( θ) without using the powers of sin or cos .

Q: Find the exact value of the expression cos 5π/12 cos π/12 + sin 5π/12 sin π/12. Do not use a…

A: Let the given equation be y - y = cos5π12cosπ12+sin5π12sinπ12Let ,A = 5π12 and B = π12Then,y =…

Q: Tan (690) × cos(-510)

A: To find: The value of . Formula used: Trigonometric reduction formula:

Q: 1/2 sin e cos (cos a cosec 0) de TC (1-cos a).

A: Note that we have to show that the integral value is  π2(1 - cosα).

Q: verify the identity seco+1 2 COS 2 - 2 sec 0

A: Verify the identity: cos2θ2=secθ+12secθ

Q: If cos(0 - π/2) 0.54, find sin(- 0)

A: