evaluate
(tan 7 degree)(tan 23 degree) (tan60 degree) (tan 67 degree) (tan 83 degree)+ cot 54 degree/tan 36 degree + sin 20 degree sec 70 degree - 2
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Answer:
Given, tan7°tan23°tan60°tan67°tan83°
= tan(90°-83°)tan83°tan(90-67°)tan67°tan60°
= cot83°tan83°cot67°tan67°tan60°
= (1/tan83°) × tan83° × (1/tan67°) × tan67°× tan60°
= 1 × 1 × tan60°
= √3 (ans.)
Step-by-step explanation:
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