Question

answer the question with proper explanation​

Answer 1

Answer:

• It's a proof.. to prove the validity of an equation.

Step-by-step explanation:

A+B=45°.

so Tan(A+B) = 1

so (Tan A + Tan B )/(1-Tan A ×Tan B) = 1.

• Take the denominator to the other side and rearrange the factor on the RHS.

so Tan A + Tan B + Tan A × Tan B = 1

• Add 1 on both sides and factorize the LHS to get

(1+Tan A) (1+Tan B) = 2.

Hence Proved !