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In a Delta ABC , ir r1 = 2r2 = 3r3 " the...

In a `Delta ABC , ir r_1 = 2r_2 = 3r_3 " then " (a)/(b) + ( b)/( c ) + (c )/(a) ` is equal to

A

` ( 75)/( 60 ) `

B

` ( 155)/( 60) `

C

` ( 176)/( 60 ) `

D

` ( 191)/( 60 ) `

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The correct Answer is:
D
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AAKASH SERIES-PROPERTIES OF TRIANGLES-EXERCISE - II
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  2. Statement -I : In Delta ABC , b cos ^(2) "" ( C)/(2) + c cos ^(2) ""...

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  4. If in a Delta ABC, r1= 2r2= 3r3, then the perimeter of the triangle ...

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  8. A ladder of 20 mt long reaches a point 20 mt below the top of a flag s...

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  12. A tower subtends angles alpha, 2alpha, 3alpha at A,B and C all lyin...

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  13. The upper (3)/(4) the portion of a vertical pole subtends an angle...

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  14. A vertical pole subtends an angle Tan ^(-1) (( 1)/(2)) at a point ...

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  15. The sides of a right angled trinagles are in A.P., then they are in th...

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  16. The angle of elevation of the top of the tower is 45^(@) on walking up...

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  17. The angle of elevation of a tower from two point which are distance h...

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