Question

Easier trig help pls sorry
tan(A+60)tan(A-60)(1+tanA)=-3
@zepdrix @ikram002p @ganeshie8

Answer 1

@ganeshie8 any ideas? just a formula to use will do if it works

Answer 2

the donkey way would be to apply tan(A+B) formula and try simplifying all day...

Answer 3

haha yea i thought abt that but is there a better way?

Answer 4

apply soemthing for
tan (a) tan (b )
maybe ?

Answer 5

ye but wats the tanAtanB formula i still dont know lol

Answer 6

actually tan(a)tan(b) formula simplifies smoothly

Answer 7

\[\large \tan A \tan B = \dfrac{\tan A - \tan B}{\tan(A-B)} - 1\]

Answer 8

\[\tan(A+60)\tan(A-60)(1+\tan A)\]

\[\left(\dfrac{\tan(A+60)+\tan(A-60)}{\tan(A+60-(A+60))}-1\right) (1+\tan A)\]

Answer 9

\[\left(\dfrac{\tan(A+60)+\tan(A-60)}{\tan 120}-1\right) (1+\tan A)\]