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Trigonometry PS

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Junior | Next Rank: 30 Posts
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Trigonometry PS

by chaithu_bunny » Mon Apr 22, 2013 3:39 am
Find the sum of all real numbers of the form (n*sin n), where n is an even natural number and less than or equal to 180 degrees

A 90*cos1
B 45
C 45*sin89
D 2*cos44 + 2*sin89
E 0

I don't know how to approach this problem. Kindly help me.
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by Anju@Gurome » Mon Apr 22, 2013 4:28 am
Just ignore the problem.
Trigonometry is beyond the scope of GMAT.
Anju Agarwal
Quant Expert, Gurome

Backup Methods : General guide on plugging, estimation etc.
Wavy Curve Method : Solving complex inequalities in a matter of seconds.

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