Question

If Tan(A-B) = Tan A -Tan B/1+tanA•TanB. Evaluate Tan15°​

Answer 1

Step-by-step explanation:

tan15°=tan(45-30)

tan15=tan45-tan30/1+tan45tan30

tan15=1-(1/√3)/1+1.1/√3

tan15=(√3-1)/(√3+1)

tan15=(√3-1)²/3-1

tan15=3-2√3+1/2

tan15=1-√3