Posted by susmita on Friday, June 29, 2012 at 12:41pm.
tanA = 2 in QIII means
sinA = -2/√5
cosA = -1/√5
cosA/(sin^3A + cos^3A)
= -1/√5 / (-8/5√5 - 1/5√5)
= -1/√5 / (-9/5√5)
= -1/√5 * -5√5/9
= 5/9
that's PI, not PIE!
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