Question

Ada yang bisa bantu ini, ini rumit banget!!!!!!!

Answer 1

(s/c  ) / (1/c^4)    +  (c/s) /  ( 1/s^4)  =
1+tg^2x = sec^2 x = 1/cos^2 x    [ sec = 1/ cos,  kalo cosec = 1/ sin ]
1 +cotg^2x = cosec^2 x = 1/ sin^2 x

s = sin
c = cos
lanjut lagi
s . c^3  + c  s^3 = s. c ( c^2 x + s ^ 2 x ) = sin x. cos x ( 1 ) terbukti  ruas kanan = kiri

Answer 2

Tan θ /(1+tan²θ)² + cot θ/(1+cot²θ)² =sin θcosθ

tan θ/ (sec²θ)² + cot θ / (cosec²θ)² =sin θcosθ
sin θ/ cos θ x cos^4 θ + cosθ/sin θ x sin^4 θ =sin θcosθ
sinθcos^3 θ + cosθsin^3 θ =sin θcosθ
sinθcosθ (sin^2 θ + cos ^2 θ) =sin θcosθ
sin θ cos θ (1) =sin θcosθ
terbukti