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