cos 30.cos 60 - sin 30 . sin 60=0
Answers
Answered by
1
Answer:
√3/2 *1/2 - 1/2 *√3/2 =0
√3/4 - √3/4 =0
0 =0
Answered by
1
Answer:
Step-by-step explanation:
Using identity
Cos(A+B) = cos A cosB- sinAsinB
We get
Cos(30+60)=cos30cos60-sin30sin60
Taking L.H.S
Cos(60+30)
Cos(90)
0
Therefore cos 30cos60-sin30sin60= 0
Hence Proved
Hope it helps you!!!
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