( cos ^(4) A - sin ^(4) A)/( cos ^(2) A ...

`( cos ^(4) A - sin ^(4) A)/( cos ^(2) A - sin ^(2) A) ` किसके बराबर है।

A

`cos ^(2) A - sin ^(2) A`

B

`cos A - sin A`

C

1

D

2

Verified by Experts

( cos ^(4) A - sin ^(4) A)/( cos ^(2) A - sin ^(2) A) किसके बराबर है।
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