Question

dll
11a + B) =
a² – 6²
CUQ
1.
sin A +sin3A+sin5A +sin 7A =
1) 4sin Acos 2 A cos 4 A
2) 4 sin A cos 2 A cos 3 A
3) 4cos Asin 2 A sin 4 A
4) 4cos Acos 2 Asin 4 A​

Answer 1

Answer:

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