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O is the circumcentre of triangleABC and...

O is the circumcentre of `triangleABC` and D is the mid point of BC. If `angleBAC= 40^@` then `angleBOD`=?

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UNITED BOOK HOUSE-BEGUNKODAR HIGH SCHOOL-EXERCISE
  1. O is the incentre of triangleABC and if <BOC = 140 then <BAC=?

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  2. In trapezium ABCD, BC||AD and AD = 4cm. Diagonals AC and BD intersect...

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  3. O is the circumcentre of triangleABC and D is the mid point of BC. If ...

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  4. If tan40×tan6θ=1 and 6θ is a positive acute angle. find the value of θ...

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  5. In a circle, if an arc of 220 cm length subtends and angle of measure ...

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  6. The ratio of the length of base radii of a right circular cylinder and...

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  7. If each edge of a cube is increased by 50% , then how much the total s...

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  8. Find the value of overset(10)underset(i=1)sum(10xxi).

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  9. Rahimchacha takes a loan amount of Rs 2,40,000 from a bank for constru...

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  10. Through the publicity of road safety programmes the street accident in...

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  11. The ratio of the roots of the quadratic equation ax^2+bx+c=0(a!=0) is ...

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

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

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  14. The total expenses of a hostel are partly constant and partly vary dir...

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  15. If (10x+3y):(5x+2y)= 9:5 then find (2x+y):(x+2y).

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  16. If a^2/(b+c)=b^2/(c+a)=c^2/(a+b)=1, show that 1/(1+a)+1/(1+b)+1/(1+c)=...

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  17. Prove that opposite angles of a cyclic quadrilateral are supplementary

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  18. State and Prove Pythagoras theorem.

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  19. ABCD is a cyclic quadrilaterla. Extended AB and DC intersect at P. Pr...

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  20. Prove that two equal chords are equidistant from the centre of the cir...

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