need help solving

Printable View

- Nov 10th 2010, 12:08 PMidunit14solution in the interval [0,360] cos2theta=square root (3)/2
need help solving

- Nov 10th 2010, 12:29 PMpickslides

Make therefore

Using the 30-60-90 special triangle

Now what other quadrants is positive in? and how many solutions are we looking for? - Nov 10th 2010, 01:25 PMProve It
- Nov 10th 2010, 01:26 PMProve It