Question

Find y.

y =

Answer 1

We can use sine..

sine = opposite/hypotenuse

\(\sf sin(45^o) = \dfrac{7}{y}\)

\(\sf sin(45^o) \approx 0.707106781\)

\(\sf 0.707106781 = \dfrac{7}{y}\)

Multiply 'y' to both sides:

\(\sf 0.707106781y = 7\)

Divide 0.707106781 to both sides, what's 7 / 0.707106781?

Answer 2

9.8?

Answer 3

Actually, we round it to 9.9.

Answer 4

oh okay

Answer 5

Welcome to Open Study!

You can give medals by clicking 'Best Resposne'. @AshleyLashae