since sinØ = opposite/hypotenuse = -3/5
you should recognize the 3-4-5 right-angled triangle.
You are also told the the angle (or triangle) is in the I, II, or IIIrd quadrant.
But isn't sinØ negative only in III of those given?
so x = -4, y= -3
thus tanØ = y/x = opposite/adjacent = -3/-4 = 3/4
Follow this type of reasoning for all of these kind of questions, and they become very very easy.
If sin 0 = -3 / 5 and pi < 0 < 3pi / 2, then tan 0 = ?
F. -5 / 4
G. -3 / 4
H. -3 / 5
J. 3 / 4
K. 4 / 5
1 answer