Math, asked by subrata9474640021, 9 months ago

a sin 2 theta + b cos 2 theta = c,b sin 2 phi + a cos 2 phi= d,a tan theta = b tan. phi prove that 1/a + 1/b = 1/c + 1/d

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Answered by rafiksy7

0

Answer:

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Answered by kunal615

1

Step-by-step explanation:

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