Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class
(x + y) formula
Last updated at May 29, 2023 by Teachoo
Example 14 Show that tan 3 tan 2 tan = tan 3 tan 2 tan We know that 3 = 2 + Therefe, tan 3 = tan (2 + ) tan 3 = tan 2 + tan 1 tan 2 tan tan 3 tan 3 tan 2 tan = tan 2 + tan tan 3 tan 2 tan = tan 3 tan 2 tan tan 3 tan 2 tan = tan 3 tan 2 tan