SOLUTION: i need to find the exact value of sin-210 degrees of the trig function, help?

SOLUTION: i need to find the exact value of sin-210 degrees of the trig function, help?

Algebra.Com

Question 698783: i need to find the exact value of sin-210 degrees of the trig function, help?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
i need to find the exact value of sin-210 degrees of the trig function, help?
-210 deg is like rotating 210 deg counter-clockwise, terminating in quadrant II where the reference angle=30 deg, and sin>0
sin -210�=sin 30�=1/2
RELATED QUESTIONS
use reference angle theorem to find the exact value of each trig function: cos 300 (answered by stanbon)

using trig function values of 30, 45, and 60 degrees find the exact value: cos 15... (answered by lwsshak3)

Use the half angle formulas to find exact value: SIN 210 degrees COS 60... (answered by lwsshak3)

Please help me find the exact value of this trig. function:... (answered by stanbon)

I need to know the steps on how to find the exact value of trig funtions. The problem I... (answered by edjones)

I need help finding the value of the trig functions 1. Use special right triangles... (answered by greenestamps)

LET theta=210 degrees find the exact valuse of sec, tan,... (answered by lwsshak3)

Find the exact value of... (answered by Alan3354)

Use the sum or difference identities to find the exact value of the trigonometric... (answered by Alan3354,ikleyn,MathTherapy)