Question

What is the value of 'sin theta' if tan theta is -4/3 ?

Answer 1

tan theta = prependicular / base = -4/3
(hypoyenous)^2 = (p)^2+(b)^2
(h)^2 = (-4)^2+(3)^2
(h)^2 = 16+9
h^2 = 25
h = 5

so, sin theta = prependicular / hypotenous = -4/5.