Question

if x=30 , cosx×2x =?

Answer 1

If x=30

Then,

Cosx×2x

= Cos 30×(2×30)

=√3/2×2×30

30√3

Answer 2

Hey!!!

Since, x= 30

Therefore by the value of x

cos30 × 2(30)

= √3/2× 2(30)

= 30√3


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