Question

Guys answer 2nd part....answer it fast the one with best answer will get BRAINLIEST answer... Do it

Answer 1

Trigonometric Identities:

⇒ sin²θ + cos² θ = 1

⇒ cos(90 - θ) = sinθ

⇒ sin(90 - θ) = cosθ

⇒ cosecθ = (1/sinθ)

Now,

$=> Given:\frac{sin15}{cos75}+cos15cosec75+cos^215+cos^275$

$=>\frac{sin15}{cos(90-15)}+cos15*\frac{1}{sin75}+(cos^215+cos^2(90-15))$

$=>\frac{sin15}{sin15}+cos15*\frac{1}{sin(90-15)}+(cos^215+sin^215)$

$=>1 + cos 15*\frac{1}{cos15}+1$

$=>1+1+1$

$=>\boxed{3}$

Hope it helps!

Answer 2

Pls find the answer in the image attached below..

Glad to help