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Prove that : (cosA)/("cosec "A+1)+("co...

Prove that :
`(cosA)/("cosec "A+1)+("cosA")/("cosec "A-1)=2tanA`

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ICSE-MIXED PRACTICE -SET B
  1. Prove that : (cosA)/("cosec "A+1)+("cosA")/("cosec "A-1)=2tanA

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  2. A dealer sells goods/services, worth Rs 30,000 to some other dealer in...

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  3. The monthly instalment of a recurring deposit account is Rs 2,400. If ...

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  4. The maturity value of a recurring deposit account is Rs 42,400. If the...

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  5. A man invests equal amounts of money in two companies A and B. Company...

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  6. A sum of Rs54,000 is invested partly in shares paying 6% dividend at 4...

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  7. Solve and graph the solution set of : 2x - 9 lt 7 and 3x + 9 le 25, ...

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  8. Solve : 3x - 2 gt 19 " or " 3 - 2x ge 7 , x in R

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  9. Use formula to solve the quadratic equation : x^2 + x - (a + 1) (a + 2...

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  10. By selling an article for Rs96, a man gains as much percent as its cos...

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  11. A trader bought a number of articles for Rs900, five were damaged and ...

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  12. 1077 boxes of oranges were loaded in three trucks. While unloading the...

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  13. If a neb and a : b is the duplicate ratio of (a + c) and (b + c). sho...

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  14. If 16((a-x)/(a+x))^3=((a+x)/(a-x)) , show that : a = 3x .

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  15. Solve for x , using the properties of proportionality (1+x+x^2)/(1-x+x...

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  16. Show that 2x + 7 is a factor of 2x^3 + 7x^2 - 4x - 14 Hence, solve the...

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  17. What number should be subtracted from 2x^3 - 5x^2 + 5x + 8 so that th...

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  18. The expression 4x^(3)-bx^(2)+x-c leaves remainders 0 and 30 when divid...

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  19. If for two matrices M and N, N =[(3,2),(2,-1)] and product MxxN = [-1...

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  20. If the sum of first 20 terms of an A.P. is same as the sum of its firs...

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  21. If a, b, c are in A.P., show that: (b + c), (c + a) and (a + b) are al...

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