Asked by helpppp

If a=sin1230°, b=cos(-1150°), c=tan1670°, d=cos2260°, then which of the following ordering is correct? (A) c>a>b>d (B) c>b>a>d (C) a>c>b>d (D) a>b>c>d (E) none of the above
Answered by oobleck
a = sin30°
b = cos70° = sin20°
c = tan50°
d = -cos80°
sure looks like c > a > b > d
Answered by helpppp
How did you get to that conclusion?
Answered by oobleck
both sin and tan are increasing functions in Quadrant I, and tan > sin
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