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

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Problems from 2/2/12

PROBLEM # 1
What are the next two numbers in this series?
1, 4, 8, 13, 21, 30, 36, 45, 54, 63, 73, ?, ?

SOLUTION 1

81 and 90.

PROBLEM #2
What is Sin3θ in terms of Sinθ ?  (symbol is theta)

SOLUTION 2

3 Sinθ   -  4 (Sinθ)^3.

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