Question

Sin square theta + cos square theta -1 if theta = 30degree

Answer 1

Answer:

1

Step-by-step explanation:

sin^2 theta + cos^2 theta = 1

OR

sin^2 60 + cos^2 60 = (√3/2)^2 + (1/2)^2

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