CBSE BOARD X, asked by zayn16, 11 months ago

If cos²A = 21/29 find cos²A - sin²A

Answers

Answered by sudarshanraj50

1

Answer:

cos2A = 21/29 ,,,,,, SO cos2a _sin2a

Explanation:

h = 841+441=== 1282,,, 32.4252672

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