# trig

posted by
**Amandeep**
.

sinx = 4/5 and x terminates in Quadrant II

Find sin2x and cos2x

How to get the answers, which are sin2x = -24/25, cos2x = -7/25?

posted by
**Amandeep**
.

sinx = 4/5 and x terminates in Quadrant II

Find sin2x and cos2x

How to get the answers, which are sin2x = -24/25, cos2x = -7/25?