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The figure drawn on the graph paper show...

The figure drawn on the graph paper shows a `Delta ABC` with vertices A (-4, 1) B(-4, 6) and C (8, 1).
Find `cosC`

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AGRAWAL PUBLICATION-SAMPLE PAPER 4-EXERCISE
  1. The figure drawn on the graph paper shows a Delta ABC with vertices A ...

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  2. The figure drawn on the graph paper shows a Delta ABC with vertices A ...

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  3. The figure drawn on the graph paper shows a Delta ABC with vertices A ...

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  4. Prove that the length of the tangents drawn from an external point to ...

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  5. Two spotlights, P and Q are mounted on a vertical pole AB as shown. ...

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  6. The minute hand of a clock is 2 cm long. Find the area of the face of ...

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  7. Two spheres of same metal weight 1 Kg and 7 Kg. The radius of the smal...

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  8. A bag contains 15 white balls and some black balls. If the probability...

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  9. Two men on either sideof a 75 m high building and in line with base of...

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  10. In the given figure, PA, QB and RC each is perpendicular to AC such th...

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  11. Using factorisation, find the HCF of 36 and 54.

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  12. Write a rational number and an irrational number between 1 and 2.

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  13. Find the zeros of the polynomial p(x) = x^2 - 7x + 6

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  14. Find the discrimination of thequadratic equation x^2 - 4x + 1 =0

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  15. Which term of the A.P. 4,9,14 is 254?

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  16. Find the sum of the first 20 natural numbers.

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  17. Find the centroid of DeltaABC, where A(-4, 6), B(2, -2) and C(2, 5)

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  18. A man goes 15 m due west and then 8 m due north. How far is he from...

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  19. Prove that 4tan^2 A - 4sec^2 A = - 4

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  20. If tan A = 3/4 , find the value of sin A.

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