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Rajan@2021
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Asked: 2021-04-07T22:44:24+05:30 In:

Without using trigonometric tables, prove that tan²66° – cot²24° = 0

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This is the basic and conceptual question from trigonometric ratios in which we have to prove that

tan²66° – cot²24° = 0, without using trigonometric tables

RS Aggarwal, Class 10, Chapter 12, question no 2(vi).

class 10rs aggarwaltrigonometric ratios
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      LHS=tan²66°−cot²24°

      =tan²66°−cot²(90−66)°

      =tan²66°−tan²66°

      =0=RHS

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