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Rajan@2021
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Asked: 2021-04-08T20:09:06+05:30 In:

Prove that: sin(50°+θ) – cos(40°-θ) + tan1°tan10°tan80°tan89° = 1

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This question is from trigonometry topic -trigonometric ratios on complementary angles in which we have been asked to prove that sin(50°+θ) – cos(40°-θ) + tan1°tan10°tan80°tan89° = 1

RS Aggarwal, Class 10, chapter 12, question no 7(v)

class 10 cbsers aggarwaltrigonometric ratios
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      Prove that: sin(50°+θ) – cos(40°-θ) + tan1°tan10°tan80°tan89° = 1

      Hence RHS = LHS

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