Question

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

Answer 1

See the attach file for ur ans

Answer 2

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: