a) sin is + in I and II
b) cos is - in II so there only
c) hard to sketch here from origin up 7 distance 25
x^2 + 7^2 =625 and x is -
x^2 = 625 - 49 = 576
x = -24
so point is at (-24,7)
cos C = -24/25
tan C = -7/24
Consider ∠C such that sin C = 7/25
a) What are the possible quadrants in which ∠C may lie?
b) If you know that cos C is negative, how does your answer to part a) change?
c) Sketch a diagram to represent ∠C in standard position, given that the condition in part b) is true.
d) Find coordinates of a point P on the terminal arm of ∠C.
e) Write exact expressions for the other two primary trigonometric ratios for ∠C.
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