Question

If A=45° B=30°then proof tan(a+b)=tanA+tanB/1-tanAtanB​

Answer 1

Step-by-step explanation:

L.H.S;

tan(45+30)=tan75= cot 15= √3+1/√3-1

R.H.S;

tan45+tan30/1-tan45tan30

tan 45 =1

tan 30=1/√3

=1+1/√3/1-1/√3= √3+1/√3-1

hence proved