Processing Math: Done

To print higher-resolution math symbols, click the
Hi-Res Fonts for Printing button on the jsMath control panel.

jsMath

Warning: jsMath requires JavaScript to process the mathematics on this page.
If your browser supports JavaScript, be sure it is enabled.

Solution 4.3:4b

If we once again use the Pythagorean identity we get

cos2v+sin2v=1

sinv=

1−cos2v.

Because the angle v lies between 0 and , sinv is positive (an angle in the first and second quadrants has a positive y-coordinate) and therefore

sinv=+

1−cos2v=

1−b2.