Question

prove tan (30+60)=tan30+tan60/1-tan tita .tab tita​

Answer 1

Step-by-step explanation:

tan a+b = sin a+b / cos a+b

(sin a cos b + cos a sin b )/( cosa cosb - sin a sin b)

divide by cosa and cos b in both num and den

we get

(tana +tanb )/ 1 - tana tanb

Answer 2

Answer:

tan30+tan60/1-tan 30 . tan 60

1/√3 + √3 / 1 - 1/√3.√3

=0