Find the values of the trigonometric functions of θ from the information given. cos(θ) = 3 13 , sin(θ) < 0

Answer 1

The cos of an angle is always between -1 and 1.

there is no angle that has a cos of 313.

If it is 3/13 you use inverse cos of 3/13

I get 76.6576362 degrees. But the sin is negative so you are in the fourth quadrant. Subtract the 76.6576362 from 360 to get the angle in the fourth quadrant.

360 - 76.6576362 = answer

I think!