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If the angle at the vertex of an isoscel...

If the angle at the vertex of an isosceles triangle having the maximum area for the given length of the median to one of its equal sides, is x then `5cosx` is equal to

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ARIHANT MATHS ENGLISH-PROPERTIES AND SOLUTION OF TRIANGLES -Exercise (Subjective Type Questions)
  1. In an obtuse angled triangle, the obtuse angle is (3pi)/4 and the othe...

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  2. If in triangle A B C a , b , ca n da ngl eA are given and csinA<a<c ,t...

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  3. If P is a point on the altitude AD of the triangle ABC such the /C B P...

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  4. If R denotes circumradius, then in DeltaABC,(b^2-c^2)/(2aR) is equal t...

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  5. In DeltaABC, A = (2pi)/(3), b -c = 3 sqrt3 cm and " area of " Delta AB...

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  6. If Delta = a^(2)-(b-c)^(2), Delta is the area of the Delta ABC then ta...

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  7. In a DeltaABC, B=90^(@), AC=h and the length of perpendicular from B t...

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  8. If in a Delta ABC, sin ^(3) A + sin ^(3) B+ sin ^(3) C =3 sin A .Sin...

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  9. In a triangle ABC, if the sides a,b,c, are roots of x^3-11 x^2+38 x-40...

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  10. If the sides a,b,c are in A.P., prove that (tan)A/2+ (tan) c/2=2/3( co...

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  11. The sides of a triangle are in A.P. and its area is (3)/(5) th of an e...

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  12. If AD, BE and CF are the medians of a Delta ABC, then evaluate (AD^(2)...

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  13. Let AD be a median of the Delta ABC. If AE and AF are medians of the t...

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  14. In DeltaABC, If x= tan((B-C)/2) tan(A/2),y= tan((C-A)/2)tan(B/2), z=...

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  15. DeltaABC is equilateral triangle of side a. P lies on AB such that A i...

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  16. The base of a triangle is divided into three equal parts. If theta(1),...

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  17. If the circumradius of a triangle is 54/sqrt1463 and the sides are in...

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  18. If the angle at the vertex of an isosceles triangle having the maximum...

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  19. In an acute angle triangle ABC, AD, BE and CF are the altitudes, then ...

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  20. Let P be the point inside that Delta ABC. Such that angle APB=angle BP...

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