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If a, b, c are in A.P then cot(A/2),cot...

If `a, b, c` are in A.P then `cot(A/2),cot(B/2),cot(C/2)` are in

A

`2cot(A//2)`

B

`2cot(B//2)`

C

`2cot(C//2)`

D

`2cotA`

Text Solution

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The correct Answer is:
B
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TARGET PUBLICATION-TRIGONOMETRIC FUNCTIONS -Competitive Thinking
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  9. The area of the triangle ABC,in which a=1,b=2angleC=60^(@) is

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  10. In DeltaABC,"if "a=1,b=2,angleC=60^(@),"then "4Delta^(2)+c^(2)=

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  11. In triangleABC, a^(2) sin2C + c^(2) sin2A=

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  12. If the area of a triangle ABC is given by Delta=a^(2)-(b-c)^(2), then ...

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  13. Let PQR be a triangle of area Delta with a = 2, b = 7/2 and c =5/2, wh...

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