Math, asked by parthmandrekar2, 1 day ago

If Sin 7x = Cos 3x then the value of x is (a) 10 (b) 21 (c) 4 (d) 9​

Answers

Answered by sumit83610
4

Answer:

Sin 7x = Cos 3x

sin 7x=sin(90-3x)

7x=90-3x

x=9

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