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In triangle ABC, AB = (2a-1)cm,AC = 2sqr...

In triangle ABC, AB = (2a-1)cm,`AC = 2sqrt(2a)`cm, BC = (2a+1)cm, find `angle BAC`.

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UNITED BOOK HOUSE-RK MISSION BOYS' HOME HIGH SCHOOL-EXERCISE
  1. If the one root of x^2+bx+12=0 is 2 and roots of x^2+bx+q=0 are eq...

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  2. If x= 3+ 2sqrt2 then find the value of x+1/x.

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  3. In triangle ABC, AB = (2a-1)cm,AC = 2sqrt(2a)cm, BC = (2a+1)cm, find ...

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  4. The lengths of radii of two circles are 8 cm and 3 cm and the distance...

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  5. In this figure, O is the centre and AC is the diameter. If angleAOB= 8...

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  6. If sec5A = cosec(A+36^@) and 5A is positive acute angle then find A.

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  7. The ratio of volumes of a solid right circular cone, a solid sphere an...

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  8. If the length of radius of a sphere is increased by 50%, then how much...

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  9. Write the value of complementary angle of 63^@35'15''.

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  10. In a frequency distribution, mean is 8.1, sum fixi = 132+5k and sumfi ...

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  11. At present the sum of the number of students in all the secondary inst...

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  12. Rakhadidi deposited Rs 10,000 of her savings in two separate banks at ...

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  13. If one root of the equation ax^2+bx+c=0 (a!=0) is twice the other, tha...

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  14. Solve: a/(ax-1)+b/(bx-1)=a+b (x!=1/a,1/b).

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  15. If x= (sqrt7+sqrt3)/(sqrt7-sqrt3) and xy= 1 then find the value of (x^...

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  16. y is sum of two variables, one in which varies directly with x and ano...

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  17. If x=(4ab)/(a+b) then show that (x+2b)/(x-2b)+(x+2b)/(x-2b)=2.

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  18. If a,b,c,d are in continued proportion then show that (b-c)^2+(c-a)^2+...

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  19. State and Prove Pythagoras theorem.

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  20. Prove that if any straight line passing through the centre of a circle...

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