sin^4 30^@ + cos^4 30^@ - sin 25^@ cos65...

`sin^4 30^@ + cos^4 30^@ - sin 25^@ cos65^@ - sin65^@ cos25^@` का मान ज्ञात करें।

A

(a) `-3/8`

B

(b) `13/8`

C

(c) `0`

D

(d) `5/8`

लिखित उत्तर

Verified by Experts

The correct Answer is:

A

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