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ANJ

· started a discussion

· 1 Months ago

short sol of this (Question: 286823.0 )

first construct a diagram and note that radius of incircle is made when we draw perpendicular to any side of triangle from meeting point of angle bisector..
Now ap=3 , of o is centre of circle then angle oap = 30 ;
now tan30 = r/3
so r= root3

Question:

A circle is inscribed in a triangle ABC. It touches side AB at point p. If  ∠A = 60°, AX = 3 cm, BX = 5 cm, then find the radius of circle ?

Options:
A)

357    

B)

573    

C)

5173    

D)

3    

Solution:

Ans: (d)

  

mayank davaggar

· commented

· 1 Months ago

beauty with brain

Sachin Beniwal

· commented

· 1 Months ago

Gajab

Knowledge Expert

· commented

· 1 Months ago

Dear Student,
You can use short trick also.

Thanks and Regards
Team TR

Knowledge Expert

· commented

· 1 Months ago

Dear Student,
You can use short trick also.

Thanks and Regards
Team TR
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