14. If Cos 2 A.Cos 2B = Cos 20, prove that: Sin² A.Cos² B+Cos² A.Sin² B = Sin²0

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A:

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Q: 2. Find the angle 0 if A = 33°, b = 13 and c = 9.

A: angle A=33b=13c=9

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A: 96√3sin(π/48)cos(π/48)cos(π/24)cos(π/12)cos(π/6)

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Q: 2 sin²a - 1 sin a + COS a

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A: Answer:  y=−2sin2xExplanation:Step 1:

Q: Solve 8 sin(3x) = 7 for the two smallest positive solutions A and B, with A < B A = B =

A: The equation is

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A: The possible figure

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Q: how do i solve

A: Final…

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A:

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A: The figure

Q: 16. Simplify to a trig expression with no fractions: 1+cot² (0) cot² (0)

A:

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Q: Convert 36.619° to degree-minute-second form. If necessary, round your answer to the nearest second.

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Q: 2, 3π cot²( -B) if sin 2ẞ 4 5

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A: The figure

Q: cos 18° cos 12° cos 72° cos 78° sin 62° sin 73° - sin 28° sin 17° -

A: On Simplifying we get   6​/2                                         Explanation:

Q: 9. Prove the following in Show Your Work sinx -=-cofx.cosx 1-sec² x

A: