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हल कीजिए - `sin theta tan - 1 = tan theta - sin theta`

Answer» दिया है - `sin theta tan theta-1= tan theta -sin theta`
`rArr sin theta tan theta-1-tan theta +sin theta = 0`
`rArr tan theta(sin theta -1) + 1 (sin theta -1) = 0`
`rArr (sin theta -1) (tan theta+1) = 0`
`rArr sin theta -1 =0`
या `tan theta +1 = 0`
यदि `sin theta -1 = 0 " या " sin theta =1 = sin. pi/2`
तब `theta = n pi + (-1)^(n) pi/2`
और, यदि `tan theta = -1 = tan((-pi)/4)`
तब `theta = n pi - pi/4 , n in Z`


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