Math, asked by shaguftasultan27, 9 months ago

55. 6 tanx - 2 cos? x = cos 2x if
(a) cos 2x = -1 (b) cos 2x = 1
(c) cos 3x = -1/2 (d) cos 2x = 1/2

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Answered by cdsingh8941

0

Answer:

Step-by-step explanation:.........................

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