Question

if sin theta + sin squared theta is equal to 1 find theeta

Answer 1

Answer:

let sin theta equal to x

x+x²=1

x²+x-1=0

this cannot be solved by prime factorization method so

by using root formula

x=[-b±√(b²-4ac)]/2a

x=[-1±√5]/2

means

sin theta = (-1±√5)/2

theta = sin inverse (-1±√5)/2