Question

Prove that :-

tan 70° = tan 20° + 2tan 50°




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Answer 1

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Answer 2

Answer:

Income elasticity ofdemand refers to the sensitivity of the quantity demanded for a certain good to a change in real income of consumers who buy this good, keeping all other things constant. ... With incomeelasticity of demand, you can tell if a particular good represents a necessity or a luxury.