cos(0 + B) = cos 0.cosB- sin 0. sinB . cos(0 + 0) - cos 20 - cos2e-sin2e 1- cos 20 1-cos2e+ sin 20 1- cos20+ sin20 Vi+ cos 20 V1+cos2e-sin20 sin20+ cos20-1 sin20 -1- cos20 sin20+ sin20 2sin 20 sine Veos20+cax20 V2cos20 cose - tane

Q: 3x 3x 16 cos + isin 4. 4. Sa 5x 34 cos + isin 3 3

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Q: Find and explain  the errors that have been made

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Q: -p² sin(w) cos?(w) – p cos² (») -p2 sin(4).

A:

Q: 11 -1(cos( -(- COS 10

A: Given,cos-1cos( 11π10)

Q: True or False sin(sin-1 0) = 0 and cos(cos-10) = 0.

A: Given:         sin(sin−10)=0  and cos(cos−10)=0

Q: C. If sin A+ sin2 A = 1 and a cos12A +b cos® A+ c cos A - 1 = 0 then b + - + b =? %3D %3D

A: Topic = Trigonometry

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

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Q: 5π (b) sec 6 (c) (sin 570⁰ + cos180°)-¹ (d) sec 7π 6 - 1 CSC 4π 3 + COS 5π 6

A: b)sec-5π6-csc4π3sec(-θ)=secθ since you have posted multipart question, i can do first question as…

Q: Cosx 1+sinx 11. 1+sinx 2secx Cosx

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Q: TT -1 Cos 2 sin 2

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Q: Give the correct order for the following steps to show cos (0) (sec (0) + cos(0) csc²(0)) = csc²(0)

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Q: 7T 12 COS COS 뜸 + sin sin 5T 12

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Q: (b) Show that: cos(x cos 0) = Jo - 2J₂ cos 20 +2J4 cos 40 +

A: Solution (b):

Q: Simplify cos(arctan-1) O no solution O-V2/2 -V2/2 O V2/2

A: Solve the following

Q: (1+Sin O+COs02=a(+Sin0)+cose)

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Q: r/4 1 + sin 0 de cos? 0

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Q: Evaluate * | (0² + 1) cos 0 d0. e2sine + 20cose – sine + c 02sine – 20cos0 – sine + c Option 1…

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Q: - Find all solutions for 4 cos x+V3 = 2 cos x if 0<x<2n. %3D

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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