1.

If theta=3alpha and sin theta =(a)/(sqrt(a^(2)+beta^(2))),, the value of the expression a cosec alpha - b sec alpha is

Answer»

`(a)/(SQRT(a^(2)+B^(2)))`
`2sqrt(a^(2)+b^(2))`
`a+b`
`(sqrt(a^(2)+b^(2)))/(2)`

ANSWER :B


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