Question

$cosx = cos60 \ cos30 + \sin60 \sin30$
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Answer 1

Answer:

cos60=1/2

cos30=√3/2

sin60=√3/2

sin30=1/2

Step-by-step explanation:

Putting up the values

cos x=1/2*√3/2+√3/2*1/2

cos x=√3/4+√3/4

cos x=2*√3/4

cos x=√3/2

cos x =cos 30

x=30°

So the value of x is 30⁰