If `theta=30^@` , verify that: (i) `tan2theta=(2tantheta)/(1-tan^2theta)` (ii) `sin2theta=(2tantheta)/(1+tan^2theta)`

If theta=30o, verify that: (i) tan2 theta=(2tan theta)/(1-tan^(2)theta)( ii) sin2 theta=(2tan theta)/(1+tan^(2)theta)

If theta = 30^@ , verify that tan 2 theta= (2 tan theta)/(1- tan^2 theta) .

If theta=30^@ , verify that: (i) cos2theta=(1-tan^2theta)/(1+tan^2theta) (ii) cos3theta=4cos^3theta-3costheta

sin^(3)theta = tan2theta + tantheta

tan 3theta = tan 2theta + tantheta

tantheta+tan2theta=tanthetatan2theta=1

tan3theta + tantheta = 2tan 2theta

If theta=30o, verify that: ( i )cos2 theta=(1-tan^(2)theta)/(1+tan^(2)theta)( ii) cos3 theta=4cos^(3)theta-3cos theta

tantheta+tan2theta=tan3theta

Taking theta=30^(@) , verify each of the following (i) sin 2theta=2sin theta cos theta (ii) cos theta=2cos^(2)theta-1=1-2sin^(2)theta (iii) tan2theta=(2tantheta)/(1-tan^(2)theta)