trig
posted by will on .
Given that sin = 3/5 and lies in quadrant II, find the following value.
cos

Isn't cosine negative in quadrant II?
memorize this:
Sin^2 X + Cos^2 X=1
find cosine X, you know sin X as 3/5
posted by will on .
Given that sin = 3/5 and lies in quadrant II, find the following value.
cos
Isn't cosine negative in quadrant II?
memorize this:
Sin^2 X + Cos^2 X=1
find cosine X, you know sin X as 3/5