1.

Let alpha, beta and gamma be some angles in the first quadrant satisfying tan(alpha+beta)=15//8 and cosec gamma = 17//8, then which of the following hold(s) good ?

Answer»

`alpha+beta+GAMMA=pi`
`cot alpha cot beta cot gamma = cot alpha + cot beta + cot gamma`
`TAN alpha + tan beta + tan gamma = tan alpha tan beta tan gamma`
`tan alpha tan beta + tan beta tan gamma + tan gamma tan alpha =1`

Answer :B::D


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