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Let the angles A , Ba n dC of triangle A...

Let the angles `A , Ba n dC` of triangle `A B C` be in `AdotPdot` and let `b : c` be `sqrt(3):sqrt(2)` . Find angle `Adot`

A

`75^(@)`

B

`45^(@)`

C

`60^(@)`

D

`15^(@)`

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OBJECTIVE RD SHARMA ENGLISH-PROPERTIES OF TRIANGLES AND CIRCLES CONNECTED WITH THEM-Chapter Test
  1. In a DeltaABC, (a + b + c) (b + c - a) = lambda bc. (where symbols ha...

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  2. If in DeltaABC, a=2b and A=3B, then A is equal to

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  3. Let the angles A , Ba n dC of triangle A B C be in AdotPdot and let b ...

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  4. In a triangle ABC, AD, BE and CF are the altitudes and R is the circum...

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  5. If in a triangleABC=(a)/(cos A)=(b)/(cos B), then

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  6. In a triangleABC, s/R=

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  7. If in a triangleABC, A=pi/3 and AD is the median, then

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  8. Prove that a(b^(2) + c^(2)) cos A + b(c^(2) + a^(2)) cos B + c(a^(2) +...

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  9. The angle of a right-angled triangle are in AP. Then , find the ratio ...

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  10. Find the sum of the radii of the circles, which are respectively inscr...

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  11. If 0 lt x lt pi/2 then

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  12. The sides of a triangle are 3x + 4y, 4x + 3y and 5x+5y units, where x ...

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  13. The perimeter of a triangle is 16 cm. One ofthe sides is of length 6 c...

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  14. In a triangleABC," if "(a)/(b^(2)-c^(2))+(c)/(b^(2)-a^(2))=0," then "a...

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  15. In a triangleABC, a^(2) sin 2C+c^(2) sin 2A=

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  16. Prove that (cos C + cos A)/(c + a) + (cos B)/(b) = (1)/(b)

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  17. If the sides of triangle a, b, c be in A.P. then tan.(A)/(2)+tan.(C )/...

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  18. In a triangle ABC, cos A+cos B+cos C=

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  19. if A+ B + C = pi, and cos A = cos B cos C, show that 2 cot B cot C=1.

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  20. Prove that a(b^(2) + c^(2)) cos A + b(c^(2) + a^(2)) cos B + c(a^(2) +...

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