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3 years ago

Find the following trigonometry values cos (150) = ? sin (150) = ?

Mathematics

2 answers:

Vlad1618 [11]3 years ago

6 0

Answer:

see explanation

Step-by-step explanation:

cos150°

= - cos(180 - 150)°

= - cos30°

= - $\frac{\sqrt{3} }{2}$

-------------------------

sin150°

= sin (180 - 150)°

= sin30°

= $\frac{1}{2}$

melisa1 [442]3 years ago

4 0

Answer:

See below in bold.

Step-by-step explanation:

cos 150 = - cos(180 - 150)

= - cos 30

= -√3/2.

sin 150

= sin (180 - 150

= sin 30

= 1/2.

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