Question

If tanx = 3/4 and x lies in the third quadrant, find sinx.
(a) (-3)/4 (b) (-3)/5 (c) (-4)/5 (d) 3/5

Answer 1

1. by Pythagoras theorem we get hypotenuse=5

Step-by-step explanation:

2.in 3rd quadrant sinx is negative

3.sinx=opposite/hypotenuse

(-3/5)

Answer 2

please see this attachment.. u will get to know