Question

(tan35°+cot78°)
Cot55°. Tan12°

Answer 1

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

Step-by-step explanation:

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