PROBLEM # 2
Find the area of the largest semicircle that can be inscribed in the unit square.

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Problems from 2/16/12

PROBLEM #1
A simple figure has n sides. What is the sum of interior angles of the figure?

SOLUTION 1
180 x (n-2) degrees.

PROBLEM #2
What is Cos(3t) in terms of Cos(t)?

SOLUTION 2

4 (Cosθ)^3  -  3 Cosθ.

Congratulations to Kishore Balsara, who was the winner of the last set of puzzles.