Consider ,Divide num and denominator by cos4x to get,Let tan x = tsec2x dx = dtNow divide both numerator and denominator by to get,Let

Q68 of 865 Page 19

Evaluate

Consider ,

Divide num and denominator by cos⁴x to get,

Let tan x = t

sec²x dx = dt

Now divide both numerator and denominator by to get,

Let