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Question

If A=300, then
2cos2A1=12sin2A
If true enter 1 else 0

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Solution

A=30
Now, 2cos2A1=12sin2A
L.H.S: 2cos2A1=2cos2301
= 2(32)21
= 2(34)1
= 12
R.H.S : 12sin2A
= 12sin230
= 12(12)2
= 112
= 12
Thus, L.H.S=R.H.S

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