Answer:
Let theta= tan^-1x + tan^-1y
tan theta=tan(tan^-1x + tan^-1y)
=x+y/1-xy
Step-by-step explanation:
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Answer:
Let theta= tan^-1x + tan^-1y
taking tan on both sides,
tan theta=tan(tan^-1x + tan^-1y)
=tan(tan^-1 x + tan^-1y)/1-tan(tan^-1 x)tan(tan^-1y)
=x+y/1-xy
Step-by-step explanation: