SOLUTION: please help! Find the value of: tan^-1 (-sqrt. 3) Thank you, Tami

Algebra ->  Trigonometry-basics -> SOLUTION: please help! Find the value of: tan^-1 (-sqrt. 3) Thank you, Tami      Log On


   

Question 149985: please help!
Find the value of:
tan^-1 (-sqrt. 3)
Thank you, Tami
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
the angle whose tangent is -sqrt(3) is part of a 30º-60º-90º triangle in the 2nd quadrant (tangent is negative)

the reference angle in the 2nd quadrant is 60º, so the angle is 120º or 2pi/3 radians