SOLUTION: Please help me solve: sin(3pi). I know i have to use the basic trigonometric functions, but I am not sure how

Algebra ->  Trigonometry-basics -> SOLUTION: Please help me solve: sin(3pi). I know i have to use the basic trigonometric functions, but I am not sure how      Log On


   

Question 372333: Please help me solve: sin(3pi). I know i have to use the basic trigonometric functions, but I am not sure how
Found 2 solutions by neatmath, amalm06:
Answer by neatmath(302) About Me  (Show Source):
You can put this solution on YOUR website!

Because of the nature of trigonometric functions,

sin%283pi%29 is equal to sin%28pi%29

There are many different ways to find the value for sin%28pi%29 including:

a calculator

a trigonometric table

a triangle

sin%28pi%29 is equal to zero.

There is a LOT more to it, but there are many trigonometry resources around.

And the more practice you get using the trig functions, the better.

I hope this helps!

Answer by amalm06(224) About Me  (Show Source):
You can put this solution on YOUR website!
sin(3π)=sin(2π+π)=(sin2π)(cos2π)+(sinπ)(cos2π) = 0 (Answer)