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In a Delta ABC, the minimum value of ...

In a `Delta ABC`, the minimum value of
`sec^(2). (A)/(2)+sec^(2). (B)/(2)+sec^(2). (C)/(2)` is equal to

A

3

B

4

C

5

D

6

Text Solution

Verified by Experts

The correct Answer is:
B
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ARIHANT MATHS ENGLISH-TRIGONOMETRIC FUNCTIONS AND IDENTITIES-Exercise (Single Option Correct Type Questions)
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  13. Minimum value of 4x^2-4x|sin theta|-cos^2 theta is equal

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  14. In a triangle ABC, cos 3A + cos 3B + cos 3C = 1, then find any one ang...

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  15. (sqrt(1+sin 2A)+sqrt(1-sin 2A) )/(sqrt(1 + sin 2A)-sqrt(1-sin2A)) If |...

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  16. For any real theta, the maximum value of cos^(2)(costheta)+sin^(2)(sin...

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  17. Find the ragne of the expression 27^(cos 2x) 81^(sin 2x)

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  18. ABCD is a trapezium such that AB and CD are parallel and BC bot CD. If...

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  19. If 4nalpha =pi then cot alpha cot 2 alpha cot 3alpha ...cot (2n-1)alph...

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  20. In DeltaABC, if (Sin A + SinB + SinC) (SinA + SinB - SinC) = 3SinA Sin...

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