Question

The value of tan 20° + 2 tan 50° - tan 70° is​

Answer 1

Answer:

4.788

Step-by-step explanation:

tan20° + 2tan50° - tan70°

tan(90°-70°) +2tan(90°-40°) - tan70°

cot70° - tan70° + 2cot40°

1/tan70° - tan70° + 2cot 40°

(1-tan^2 70°) / tan 70° + 2cot40°

sec^2 70°/tan70° + 2×0.839

(2.923)^2/2.747 + 1.678

8.543929/2.747 + 1.678

3.110 + 1.678

4.788

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Answer 2

Step-by-step explanation:

0.4117508635 is the answer