Math, asked by singhabhi743, 8 months ago

using the formula sin2a=2sinacosa,deduce that co
s2a =

Answers

Answered by euniceroselin

0

Answer:

If sin A = 35 find the values of cos 2A.

Solution: Given, sin A = 35.

cos 2A. = 1 - 2 sin2 A. = 1 - 2 (35)2. = 1 - 2 (925)

= 1 - 1825.

= 25−1825.

= 725.

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