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यदि alpha=beta=60^(@) हो तो cos(alpha-...

यदि `alpha=beta=60^(@)` हो तो `cos(alpha-beta)` का मान क्या होगा ?

A

0

B

1

C

2

D

3

लिखित उत्तर

Verified by Experts

The correct Answer is:
B
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