Question

Prove that sin(180+a)cos(90+a)tan(270-a)cot(360-a)/sin(360-a)cos(360+a)cosec(-a)sin(270+a)=1

Answer 1

Answer:

-Sin a ×(-sin a)× cot a (-cot a)/(-sin a)×cos a×(-cosec a) (-cos a)=1

Step-by-step explanation:sin (180+a)=(-sin a), cos(90+a)=(-sin a), tan (270-a) = cot a, cot (360-a) = (-cot a), sin (360-a)=(-sin a), cos (360+a)= cos a, cosec (-a)= cosec a, sin (270+a)=(-cos a)

Sin2a×(-cot2a)/(- cos2a)

Sin2a×(-cos2a/ sin2a)/(-cos2a)

(-cos2a)/(-cos2a)

1

Proved

Answer 2

Answer:

hope it helps you friend:)