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Prove that: (sinA)/(1+cotA) -(cosA)/(1...

Prove that:
`(sinA)/(1+cotA) -(cosA)/(1+tanA)=sinA-cosA`

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ICSE-MATHEMATICS-2020 -SECTION-B
  1. Prove that: (sinA)/(1+cotA) -(cosA)/(1+tanA)=sinA-cosA

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  2. A company with 500 shares of nominal value Rs. 120 declares an annual...

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  3. The mean of the following data is 16. Calculate the value of f.

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  4. The 4^(th), 6^(th) and the last term of a geometric progression are 1...

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  5. If A=[(3, 0),(5, 1)] and B=[(-4,2),(1, 0)] Find A^(2)-2AB+B^(2)

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  6. In the figure given figure AB = 9cm, PA = 7.5 cm and PC = 5 cm. Chords...

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  7. From the top of a cliff, the angle of depression of the top and bottom...

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  8. Find the value of 'p' if the lines, 5x-3y+2=0 and 6x-py+7=0 are perpe...

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  9. Using properties of proportion find x:y given: (x^(2)+2x)/(2x+4)=(y^...

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  10. What must be added to the polynomial 2x^(3)-3x^(2)-8x, so that it lea...

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  11. Mr. Sonu has a recurring deposit account and deposits Rs. 750 per mon...

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  12. Use graph paper for this question. Take 1 cm = 1 unit on both x and...

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  13. If x=(sqrt(2a+1)+sqrt(2a-1))/(sqrt(2a+1)-sqrt(2a-1)), prove that x^(2)...

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  14. If the 6^(th) term of an A.P. is equal to four times its first term a...

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  15. The difference of two natural numbers is 7 and their product is 450. ...

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  16. A model of a high rise building is made to a scale of 1:50. (i) I...

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  17. From a solid wooden cylinder of height 28 cm and diameter 6 cm, two c...

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  18. Prove the identity ((1-tan theta)/(1-cot theta))^(2)=tan^(2)theta

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