soon) tan A = 1 ton BE a las n A+B=...
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soon) tan A = 1 ton BE a las n A+B=2 (B) 30ces sñ sets None

JEE/Engineering Exams
Maths
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[ tan (A+B)=frac{tan A+tan 15}{1-tan A tan B} ] ( tan (A+B)=frac{-frac{1}{2}+frac{1}{3}}{1+frac{1}{6}}=frac{-I}{6} times frac{6}{5} ) ( tan left(begin{array}{c}A+B)=-frac{1}{5} C A+B D=tan ^{-1}left(-frac{1}{5}right)end{array}right. )
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