-8cos^(3)x=-2quad 4quad -tan^(4)theta-2tan^(2)theta-3=0

If costheta=(8)/(17) ,verify that (3-4sin^(2)theta)/(4cos^(2)theta-3)=(3-tan^(2)theta)/(1-3tan^(2)theta) .

If costheta=(8)/(17) ,verify that (3-4sin^(2)theta)/(4cos^(2)theta-3)=(3-tan^(2)theta)/(1-3tan^(2)theta) .

(8sec^(4)theta-8tan^(4)theta)/(4+8tan^(2)theta)-(2cos^(6)theta+2sin^(6)theta)/(1-3sin^(2)theta cos^(2)theta)

The value of (8 sec^(4) theta- 8 tan^(4) theta)/( 4+8 tan^(2) theta )-(2 cos^(6)theta+2 sin^(6) theta )/(1-3 sin^(2) theta cos^(2) theta ) is ______

(3-4sin^(2)theta)/(cos^(2)theta)=3-tan^(2)theta

(iv) tan^(4)theta - 4 tan^(2) theta + 3 = 0 (0 < theta < 180^@)

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

Prove that :tan4 theta=(4tan theta-4tan^(3)theta)/(1-6tan^(2)theta+tan^(4)theta)

If sec^(4)theta-sec^(2)theta=3 then the value of tan^(4)theta+tan^(2)theta is:

If sec^(4)theta-sec^(2)theta=3 then the value of tan^(4)theta+tan^(2)theta is :