Question

Show that tan8A - tan5A - tan3A = tan8A tan5A tan3A.​

Answer 1

Answer:

Write tan8A = tan(5A+3A) i.e. (tan5A+tan3A)/(1-tan5Atan3A)

=(tan5A+tan3A)/(1-tan5Atan3A) - (tan5A + tan3A)

=(tan5A+tan3A)[1/(1-tan5Atan3A) - 1]

=(tan5A+tan3A)/(1-tan5Atan3A)[1-1+ tan5Atan3A]

=tan8Atan5Atan3A

so k=1.

i hope u understand

Step-by-step explanation:

rate my answer