(1+sin 2(x)/(cos (x)) = (cos 2 (x)/(cos x - sin (x))?

1 ⤊

(1+sin 2(x)/(cos (x)) = (cos 2 (x)/(cos x - sin (x))?

Verify this identity

2007-03-14 01:13:18 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

3 answers

lhs = (1+ sin 2x)/ cos x
= (sin ^2 x + cos^2 x + 2 sin x cos x)/cos x
= (sin x+ cos x )^2 / cos x

RHS = (cos^ 2 x - sin ^2 x)/ (cos x - sin x) = cos x + sin x

clearly both are not same/

2007-03-14 01:18:16 · answer #1 · answered by Mein Hoon Na 7 · 1⤊ 0⤋

Beautiful answer by math_kp. I wish he could get 20 points for it!

2007-03-14 08:23:31 · answer #2 · answered by Hy 7 · 0⤊ 1⤋

u r right ...
the first ans by math_... was right

2007-03-14 08:25:11 · answer #3 · answered by pprr 2 · 0⤊ 0⤋