English, asked by vaiga1, 1 year ago

if tanA=1/11, tanB%5/6. show A+B = 45°

Answers

Answered by Joshuawoskk
11
A+B= π/4=45

tan(A+B)=tanA+tanB/1-tanAtanB

=5/6+1/11 ÷ 1- 5/6 x 1/11

=55+6/66 ÷ 1- 5/66

=61/66 ÷ 66-5/66

=61/66 ÷ 61/66

tan(A+B) =1 =tan 45

A+B = 45

A+B = π/4

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