Question

Consider this equation.

If (0) is an angle in quadrant I, what is the value of sin (0)?

Answer 1

Explanation:

sin is also positive in Q I

and

sin^2 + cos^2 = 1 ( a trig identity you should know)

sin^2 + ( sqrt(11)/5)^2 = 1

sin^2 = 14/25

sin = + sqrt (14) / 5