English

sec^2 40° – cot^2 50° = ......

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Question

sec240° – cot250° = ......

Fill in the Blanks
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Solution

sec240° – cot250° = 1.

Explanation:

sec240° – cot250° = sec2(90° – 50°) – cot250°

= (cosec250° – cot250°)

= 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. (v) | Page 594
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