Grade 11Trigonometry
slove the equation.tan ⁻¹(x+1/x-1)+tan⁻¹(x-1/x)=tan⁻¹(-7)
slove the equation.tan ⁻¹(x+1/x-1)+tan⁻¹(x-1/x)=tan⁻¹(-7)
1 Answer
Subodh Wasnik
Apply tan^-1(x) + tan^-1(y) = tan^-1(x+y/1-xy)And then solve the quadratic equation you obtain.x=+-2
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