Question

3 sin 3 B + 2 cos (2 B + 50)
2 cos 3 B - sin (2B - 10°)
when B = 20°.​

Answer 1

Answer:

3 sin 3 B + 2 cos (2 B + 50)

2 cos 3 B - sin (2B - 10°)

when B = 20°.

Answer 2

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