Question

Match the trigonometric expressions to their solutions.

cos [140°- (50° +30°)]
√3
tan 240°
-√6-√2
cos 150°
1
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sin 255

Answer 1

Hi,
cos[140˚- ( 50˚ + 30˚)] = 1/2
tan 240˚ = √3
cos 150˚ = -√3/2
sin 255˚ = -√6 - √2/4
Those above should be the correct ones
XD