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Evaluate: sin2 60° + 2tan 45° – cos2 30°.

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Question

Evaluate: sin2 60° + 2tan 45° – cos2 30°.

Sum
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Solution

sin2 60° + 2tan 45° – cos2 30°

= `(sqrt(3)/2)^2 + 2(1) - (sqrt(3)/2)^2`

= `3/4 + 2 - 3/4`

= 2

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Chapter 10: Trigonometric Ratios - VERY SHORT ANSWER TYPE QUESTIONS (VSAQs) [Page 10.38]

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R.D. Sharma Mathematics [English] Class 10
Chapter 10 Trigonometric Ratios
VERY SHORT ANSWER TYPE QUESTIONS (VSAQs) | Q 12. | Page 10.38
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