# The angle #theta# satisfies #tan(2theta)=sintheta#. Show that either #sintheta=0# or #2costheta=2cos^2theta-1# (i did this). Hence find the smallest possible value of #theta#?

##### 1 Answer

Oct 15, 2015

Solve

#### Explanation:

Either

Call cos x = t, we get:

The smallest possible of arc x has as cos:

cos x = 0.36 --> x = 68,90

Smallest value of x -->