Use the figure to derive the formulas for sin COS and tan 2 sin (9) - COS tan (9) - 12 cos Ꮎ Ꮎ sin 0 1 - cos 0 2 Great job. 1 + cos 0 2 sin 0 COS 0 Fantastic job!

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

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

Q: 1 - cos 20 58. Show that tan? 0 1 + cos 20

A: It is known that by double angle formula, 1-cos2θ=2sin2θ1+cos2θ=2cos2θ

Q: Prove cos - sine cos + sin sec 28-tan 20.

A:

Q: VERIFY THE IDENTITIES

A:

Q: sin(sin 1 + tan (-3))

A: find the explanation below

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

A:

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

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

Q: sin?() + cos? () + tan? (4) 2 1/2 2 1 1/2

A:

Q: Sin

A: Given that: (Sin²30°+cos²30°+sin²45°+cos²45°)²

Q: Statement cotx (sec²x - 1) = = = cosx -(sec²x - 1) sinx cosx sinx cosx sinx sinx COS.X = tant…

A:

Q: TT -1 Cos 2 sin 2

A:

Q: (1 + cos ?)(1 − cos ?)=sin2 ?

A: TO SHOW 1−cosx1+cosx=sin2x

Q: (co0s(-)) +- (cos(- 1. COS because 6. COS 6.

A:

Q: sec 0 – cos 0 = sin 0 tan 0

A:

Q: Verify the identity. (Simplify at each step.) (1 + cos a)(1 – cos a) = sin² a (1 + cos a)(1 – cos a)…

A:

Q: sin' t – cos' t Prove tan?t – 1 cos? t

A:

Q: cos 8+sin e ) sec 20 + tan 20 cos 0-sin e

A:

Q: tan(C + A)tan(C – A)tan(B+ D) = tan(D – B)

A:

Q: Use the figure to derive the formulas for sin cos and tan sin -- COS Cos e sin 0 1- cos 0 2 Great…

A: You just need to use the 2 equation. Sin(0/2)/cos(0/2)0 is supposed to be theta

Q: Prove that sin? 0 + cosª 0 = sin“ 0 + cos² 0.

A: Using fundamental identity of trigonometry.

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