Question

Using the unit circle, determine the sine, cosine, and tangent funtions of the angle -pi/6

the answer is A

Answer 1

the answer is A on Edge

Explanation:

Answer 2

sin(-π/6) = -1/2

cos(-π/6) = √3/2

tan(-π/6) = -√3/3

Explanation:

-π/6 on the unit circle is 11π/6

So, the sin and cos of -π/6 is the same as the sin and cos values for 11π/6.

sin(-π/6) = -1/2

cos(-π/6) = √3/2

tan = sin/cos

tan(-π/6) = (-1/2)/(√3/2) = -1/√3 OR -√3/3