Unit Circle Trigonometry

Wahamuka

New member
Joined
Jan 19, 2019
Messages
28
Let sin 20◦ = k. Express the following in terms of k.

a) sin 340
b) cos 200
c) tan 160
d) cot 70

Been trying to solve this for a while, I have a math test tomorrow...
 
Let sin 20◦ = k. Express the following in terms of k.

a) sin 340
b) cos 200
c) tan 160
d) cot 70

Been trying to solve this for a while, I have a math test tomorrow...

You have sine. Calculate cosine and tangent.

Reference Angle

340 = 360 - 20
200 = 180 + 20
etc.
 
Top