Saturday

October 25, 2014

October 25, 2014

Posted by **Anonymous** on Sunday, April 7, 2013 at 10:58am.

Give your answers as exact values, as a list separated by commas.

- Precalculus -
**Reiny**, Sunday, April 7, 2013 at 11:10amcosine is negative in II or III

and I know cos 60° = cosØ/3 = 1/2

so for your cosØ = -1/2

Ø = 180-60 =120° or Ø = 180+60 = 240°

in radians

Ø = 2π/3 or Ø = 4π/3

**Answer this Question**

**Related Questions**

Precalculus - Find all solutions to 2 sin(theta) = sqrt(2) on the interval 0 ...

Precalculs - I have no idea how to do these type of problems. -------Problem...

Math - 1. Let (-7, 4) be a point on the terminal side of (theta). Find the exact...

algebra/trigonometry - What are the values of theta in the interval 0degrees ...

precalculus - Solve 7 cos(2 theta) = 7 sin^2(theta) + 3 for all solutions 0 less...

Trigonometry - If cot 2(Theta) = 5/12 with 0 (less than or equal to) 2(Theta) (...

trig - What are the values of theta in the interval 0 less than or equal to ...

trig - given that 0 is less then or equal to theta and theta is less then or ...

Precalc with Trig - What value(s) of theta (0 less than or equal to theta less ...

Precalculus check answers help! - 1.) Find an expression equivalent to sec theta...