Question

sin² 30 degree + cos² 30 degree​

Answer 1

Answer:

1

Step-by-step explanation:

let 30 degree =theta

sin square of thet+cos square theta

ans we get is1 by identity

Answer 2

Sin^2 30+ cos^2 30=1

As a trignometric identity sin^2theta + cos^2theta=1

Proof:sin30=1/2 cos 30=root 3/2

(1/2)whole square +root3/4whole square

1/4+ 3/4=4/4=1

Hope its clear