1.

`tan^(-1)((a cos x - b sin x)/(b cos x + a sin x)), (a)/(b) sin x gt-1` को सरलतम रूप में लिखें |

Answer» दिया गया व्यंजक
`=tan^(-1)[(a cos x-b sinx)/(b cos x + a sinx)] = tan^(-1)[((acosx-bsinx)/(bcosx))/((bcosx + a sinx)/(b cosx))] = tan^(-1)[((a)/(b)-tanx)/(1+(a)/(b)tanx)]`
` = tan^(-1)""(a)/(b)(tanx) = tan^(-1) ""(a)/(b) -x`


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