Evaluate tan 35°/cot 55°+cot 78°/tan 12°− 1

Question

Monjur Alahi

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2025-01-04 04:42

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

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

4 views Answered 2023-02-05 15:29