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Find x, if : sin 47 ^(@) sec 43 ^(@) + c...

Find x, if `: sin 47 ^(@) sec 43 ^(@) + cos 43 ^(@) cosec 47 ^(@) - x cos ^(2) 45 ^(@) = 0.`

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The correct Answer is:
`x=4`
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ICSE-REVISION PAPER -5-SECTION B
  1. Find x, if : sin 47 ^(@) sec 43 ^(@) + cos 43 ^(@) cosec 47 ^(@) - x c...

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  2. In the given chords A B and CD of circle are produced to meet at O. Pr...

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  3. If M xx [ {:(3,2, (2, -1):}] = [-14], find : the order of matrix M.

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

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  5. The diamter of a closed cylinder is 7 cm and its heght is 16 cm. Find:...

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  6. The diamter of a closed cylinder is 7 cm and its heght is 16 cm. Find:...

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  7. The diamter of a closed cylinder is 7 cm and its heght is 16 cm. Find:...

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  8. From a point of observation at the top of a 175 m high cliff, the angl...

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  9. From a point of observation at the top of a 175 m high cliff, the angl...

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  10. If P(x , y) is any point on the line joining the point A(a ,0)a n dB(0...

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  11. Show that , if A = [{:(1,3),(2,6) :}] and B = [{:(-1,4), (2,1):}] the...

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  12. Prove that angle in the same segment of a circle are equal.

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  13. On a graph paper, plot the triangle ABC whose vertices are at the poin...

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  14. The point P divides the joining of (2,1) and (-3,6) in the ratio 2:3. ...

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  15. In the given TA is a tangent to the cirlce and TBC is a secant. If AD ...

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  16. The ends of a diagonal of a square have co-ordinates (-2,p) and (p,2) ...

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  17. If have shares of three companies A,B and C in the ratio 2:3:4. Compan...

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  18. Tickets numbered from 1 to 20 are mixed up together and then a ticket ...

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  19. A solid toy is in the form of a right circular cylinder with a hemi...

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  20. The surface area of a solid metallic sphere is 10256 cm^(2). It is mel...

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  21. The marks obtained (out of 100) by 400 students in an examination are...

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