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Mohit Mittal Grade: 12
        

WHICH OF THESE IS TRUE ???


| Cos(alpha) - Cos(bets) | >= | (alpha) - (beta) |


| Cos(alpha) + Cos(bets) | >= | (alpha) - (beta) |


| Cos(alpha) - Cos(bets) | >= | (alpha) + (beta) |


| Cos(alpha) + Cos(bets) | >= | (alpha) + (beta) |


 

6 years ago

Answers : (1)

rajan jha
49 Points
										

take alpha= some angle(=30) and beta = some angle(=60) and then eliminate the choices and get appropriate answers this is a shortcut method for this type of questions. like my answer?

6 years ago
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