Question

please answer the question with solution...

Answer 1

HEY MATE , HERE IS UR ANSWER.✌✌❤❤

Option ( A ) ZERO is the correct answer.


BRIEFLY SOLVED.....

A+B+C=180

B+C=180-A

sin(B+C)=sin(180-A)

sin(B+C)=sin A …(Because sin(180-y)=sin y)

Also cos B×cos C=cos A

tan A -tan B -tan C

=tan A -(sin B/cos B + sin C/cos C)

=tanA -(sinB×cosC + sinC×cos B)/(cosB×cosC)

=tanA -(sin(B+C))/(cosB×cosC)

=tan A -sin A/cos A

=tan A -tan A

=0

HOPE IT HELPS YOU.✌
#BE BRAINLY.❤❤