Question

find sine cos &tan for the following angle 7°26'​

Answer 1

Answer:

Given tan(A+B)=3⟹A+B=60∘⋯(1) 

 tan(A−B)=31⟹A−B=30∘⋯(2) 

(1)+(2)⟹2A=90∘⟹A=45∘

Put A value in (1)

⟹B=60∘−45∘=15∘