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In a DeltaABC,(a+b+c)(tan""A/2+tan""B/2)...

In a `DeltaABC,(a+b+c)(tan""A/2+tan""B/2)=`

A

`2c "cot"(A)/(2)`

B

`2c "cot"(B)/(2)`

C

`2c "cot"(C)/(2)`

D

`2c "tan"(C)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-PROPERTIES OF TRIANGLES-PRACTICE SHEET (EXERCISE-II) (LEVEL-I)
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  8. a cos ^(2) "" ( A) /(2) + b cos ^(2) "" ( B)/(2) = c cos ^(2) "" ( C...

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  9. In Delta ABC, if cot""A/2:cot""B/2:cot""C/2=3:7:9, then a:b:c=

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  14. In Delta ABC, if c^2=a^2+b^2,2s=a+b+c, then 4s(s-a)(s-b)(s-c)=

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  15. If Delta is the area of triangle whose sides are a,b,c then the area o...

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  16. if (2)/(5)(y)/(z)+(2)/(5)(z)/(x)+(2)/(5)(x)/(y),(2)/(5)(x)/(y)+(2)/(5)...

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  17. The perimeter of a triangle is 16 cm. One of the sides is of length 6 ...

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  18. In Delta ABC, if a= 2, B=120^@, C=30^@, then the area of the triangle ...

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