Question

The value of tan 40° + 2tan 10° is​

Answer 1

Answer:

42^10°

Step-by-step explanation:

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Answer 2

Answer:

tan50°

Step-by-step explanation:

tan40°+ 2tan10°

tan50°=tan(40°+10°)

tan50°= tan40°+tan10°/1-tan40°tan10°

tan50°-(1-tan40°tan10°) = tan40°+tan10°

tan50°-tan50°tan40°tan10°=tan40°+tan10°

tan50°=tan(40°-10°)=cot40°

tan50°-cot40°tan40°tan10°=tan40°+tan10°

tan50°-tan10°=tan40°+tan10°

tan50°= tan40° +2tan10°