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Find the value of (a) cos 120^(@) (b...

Find the value of
(a) `cos 120^(@)`
(b) `sin 240^(@)`
(c) `tan (-60^(@))`
(d) ` cot 300^(@)`
(e) `tan 330^(@)`
(f) `cos (-60)^(@)`
(g) `sin (-150)^(@)`
(h) `cos ( -120)^(@)`

Text Solution

Verified by Experts

`cos120^(@)=cos(180^(@)-60^(@))=-cos60^(@)=-1/2`
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