Question

Trigonometry all identies class 11

Answer 1

Answer:

Step-by-step explanation:

sin θ = Opposite Side/Hypotenuse.

cos θ = Adjacent Side/Hypotenuse.

tan θ = Opposite Side/Adjacent Side.

sec θ = Hypotenuse/Adjacent Side.

cosec θ = Hypotenuse/Opposite Side.

cot θ = Adjacent Side/Opposite Side.

Answer 2

Step-by-step explanation:

Basic Trigonometric Formulas for Class 11

cos (A + B) = cos A cos B – sin A sin B.

cos (A – B) = cos A cos B + sin A sin B.

sin (A+B) = sin A cos B + cos A sin B.

sin (A -B) = sin A cos B – cos A sin B

Hope it helps