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Rajan@2021
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Asked: 2021-04-07T22:34:27+05:30 In:

Without using trigonometric tables, prove that cosec 80° – sec 10° = 0

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This is the basic and conceptual question from trigonometric ratios on complementary angles in which we have been asked to show that

cosec 80° – sec 10° = 0

RS Aggarwal, Class 10, chapter 12, question no 2(iii).

class 10 cbsers aggarwaltrigonometric ratios
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      LHS=cosec80°−sec10°

      =cosec(90°−80°)−sec10°

      =sec10°−sec10°

      =0=RHS

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