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If the sides of a triangle are 4 cm, 5 c...

If the sides of a triangle are 4 cm, 5 cm, 6 cm then ratio of the cosine of the least and the greatest angles is

A

`6 : 1`

B

`2 : 1`

C

`3 : 4`

D

`5 : 6`

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The correct Answer is:
A
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AAKASH SERIES-PROPERTIES OF TRIANGLES-LECTURE SHEET EXERCISE - I ( Straight Objective Type Questions )
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  2. If b = 20 , c = 21 ," and " sin A = 3/5 then a =

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  3. If the sides of a triangle are 4 cm, 5 cm, 6 cm then ratio of the cosi...

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  4. In Delta ABC , 2ac sin ""( 1)/(2) (A-B+C)=

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  5. In triangle ABC , a = 4, b = 3 and angle A = 60^(@) . Then c is root...

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  6. In a Delta ABC , if D is the mid point of BC and AD is perpendicular ...

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  7. The base of a triangle is 80 and one of base angle is 60^(@) . If the...

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  8. If the sides of a triangle are in A.P and greatest angle exceeds the l...

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  9. If D is mid point of the side BC of a triangle ABC and AD is perpendic...

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  10. Two circles of radii a and b cut each other at an angle theta then len...

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  11. In the given figure, AB is the diameter of the circle centered at O. I...

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  12. In triangle ABC, D is mid point of BC, if 'AD' is perpendicular to 'AC...

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  13. With usual notation , if in triangle ABC, (b + c)/11 = (c + a)/12 = (...

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  14. The sides of a triangle are three consecutive natural numbers and its ...

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  15. In Delta ABC , 2ac sin ""( 1)/(2) (A-B+C)=

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  17. If the lengths of the sides of triangle are 3, 5, and 7, then the larg...

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  18. If in a triangle ABC , a^(2) Cos^(2) A = b^(2) + c^(2) , then

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  19. The side of a triangle are in the ratio 1 : sqrt3 : 2, then the angles...

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  20. ( a- b) ^(2) cos ^(2) ""(C ) /(2) + ( a+b) ^(2) sin ^(2) "" ( C )/(2) ...

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