Question

5.If tan (A+B) = 13 and tanA = 1, then find <B.
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Answer 1

Answer:

B =12

Step-by-step explanation:

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Answer 2

Answer:

tanA=1 gives A=45

tan(A+B)=13

tan(45+B)=13

tan45+tanB/1-tan45 tanB =13

(1+tanB)/(1-tanB)=13

1+tanB=13-13tanB

14tanB=12

tanB=12/14

tanB=6/7