Question

50. If sin A = 2sin A cos A and sin 20° = K, then the
value of cos 20° cos 40° cos 80° cos 160º =
(c) coseco
(a) K
(b) -v1- K2
(d) cosec
sin?
57. If
√1-K²
√1-K²
(c)
(d)
8
(a) 30°
8​

Answer 1

Step-by-step explanation:

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