English

cosec^2 54° – tan^2 36° = ......

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Question

cosec254° – tan236° = ......

Fill in the Blanks
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Solution

cosec254° – tan236° = 1.

Explanation:

cosec254° – tan236° = cosec2(90° – 36°) – tan236°

= (sec236° – tan236°)

= 1

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Chapter 12: Trigonometric Ratios of Some Complemantary Angles - MULTIPLE-CHOICE QUESTIONS (MCQ) [Page 594]

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R.S. Aggarwal Mathematics [English] Class 10
Chapter 12 Trigonometric Ratios of Some Complemantary Angles
MULTIPLE-CHOICE QUESTIONS (MCQ) | Q 21. (iv) | Page 594
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