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AP EAMCET Engineering 26 Apr 2017 Shift 1 Paper

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Question : 22

Total: 160

1+ cos 10°+ cos 20°+ cos 30° =

4 cos 5° cos 10° cos 15°
4 cos 10° cos 20° cos 30°
4 sin 5° sin 10° sin 15°
4 sin 10° sin 20° sin 30°

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