find the value of cos 45 cos 60 sin 45 sin 60
Answers
Answered by
1
Answer:
Cos 45= 1/√2
Cos 60 =1/2
Sin 45 = 1/√2
Sin 60 = √3/2
Answered by
1
Step-by-step explanation:
cos(90-45) cos(90-30) sin 45 sin 60
=sin45 sin30 sin45 sin60
=sin^2 45 sin 30 sin 60
=(1/√2)^2x1/2 x √3/2
=√3/8
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