Question

could someone please help me solve this problem? find the exact value, in radians, without using calculator, of sin -1(square of 3/-2)

Answer 1

how to solve? its more memorization than anything; these numbers are most common with the 60-30 degrees

Answer 2

sin(t) = sqrt(3)/-2

Answer 3

-60 = -pi/3

Answer 4

http://upload.wikimedia.org/wikipedia/commons/4/4c/Unit_circle_angles_color.svg that is your best friend.

"What value of theta give sin(theta) = -sqrt(3)/2" is what your question is asking. :)

Answer 5

sin-1 has a range of -pi/2 to pi/2; so -pi/3 is the value it gives