baher Messages 4 Reaction score 0 Thread starter Jan 25, 2012 #1 i spent a lot of time solving this question but i can't solve it
sponsoredwalk Messages 531 Reaction score 5 Jan 25, 2012 #2 cos³(x)tan⁴(x) = cos³(x)[tan²(x)]² Think of a way to re-express tan²(x), expand & the rest should follow...
cos³(x)tan⁴(x) = cos³(x)[tan²(x)]² Think of a way to re-express tan²(x), expand & the rest should follow...