Question

cos 60°×cos 30°×cos 90°​

Answer 1

Answer :

Hope it's helpful...

pls mark me brainlyst...

Answer 2

Some important trigonometric values::(cosx°)

cos 0°=1

cos30°=√3 /2

cos 45°=1/√2

cos 60°=1/2

cos 90°=0

$\mathfrak \orange{so}$

cos 60°×cos 30°×cos 90°=1/2×√3 /2×0

=>0