Math, asked by dewda7hasifoodb, 1 year ago

evaluate cos60 cos30 +sin60 sin30

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Answered by doraksai
39
cos60.cos30+sin60.sin30
we know ,cos60=1\2 and cos 30=root 3 by 2 and sin60=root 3 by 2 and sin30=1\2
now,1\2.root 3by 2+root 3 by 2.1\2by soving it we get
the answer as root 3 by 2
Answered by prabh2139
18

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