Question

Evaluate tan35°÷cot55°+Cot78°÷÷tan12°-1

Answer 1

HELLO DEAR,

tan35°/cot55° + cot78°/tan12° - 1

tan35° * tan55° + cot78° * cot12° - 1

tan35° * tan(90 - 35) + cot78 *cot(90 - 78) - 1

tan35 * cot35° + cot78 * tab78 - 1

1 + 1 - 1

1


I HOPE ITS HELP YOU DEAR,
THANKS

Answer 2

Answer:

Tan 35° = tan (90°-55°) = cot 55°

Cot 78°= cot (90°-12°) = tan 12°

cot 55°/cot 55°+ tan 12°/tan 12°-1

=1+1-1

=2-1

=1

please mark me as brainly........