If Tan 0=4/9 and 0 is in quadrant 3, find Sin 0 can someone explain this to me please? sponsored 6 months ago 2

## Answers

Don't use 0 to represent θ. Use another variable name, such as x.

tan(x) = 4/9

x is in Quadrant III, so sin(x) < 0

√(4²+9²) = √97

sin(x) = -4/√97

tan Ө = 4 / 9

r² = 4² + 9² = 97

r = √97

sin Ө = - 4 / √97