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cos 48^@ - sin 42 ^@ = ?...

` cos 48^@ - sin 42 ^@ = ? `

A

0

B

`1/4`

C

`1/2`

D

1

Text Solution

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CPC CAMBRIDGE PUBLICATION-PRACTICE QUESTION PAPER 13-ANSWER THE FOLLOWING QUESTIONS
  1. cos 48^@ - sin 42 ^@ = ?

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  2. The given graph represents a pair of linear equations in two variables...

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  3. 17 = 6 xx2+5 is compared with Euclid's Division lemma a = bq +r then w...

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  4. Find the zeroes of the polynomial P (x) = x^(2)-3

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  5. Write the degree of the polynomial P (x) = 2x^(3)-x^(2)+5

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  6. Find the value of the discriminant of the quadratic equation 2x^(2)-4x...

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  7. Write the foumula to calculate the curved surface area of the frustum...

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  8. Find the sum of first twenty terms of Arithmetic series 2 +7+12 + cdot...

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  9. In Delta ABC , AD botBC and AD^(2)= BD xx CD. Prove that AB^(2) + AC^(...

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  10. In Delta ABC , DE || BC . If AD= 5 cm , BD = 7 cm and AC = 18 cm , fi...

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  11. In the given figure PQ || RS , prove that Delta POQ~Delta SOR.

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  12. Solve the following pair of linear equations by any suitable method. ...

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  13. In the figure , ABCD is a square of side 14 cm. A, B, C and D are the ...

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  14. Draw a circle of radius 4 cm and construct a pair of tangents such tha...

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  15. Find the co - ordinates of points which divides the line segment joini...

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  16. Prove that 3+sqrt5 is an irrational number.

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  17. Solve 2x^(2)-5x+3 = 0 by using formula.

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  18. The length of a rectangular field is 3 time its breadth . If the area ...

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  19. If sin theta = (12)/(13) find the values of cos theta and tantheta. " ...

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  20. If sqrt3 tan theta = 1 and theta is acute, find the value of sin 3 the...

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  21. Prove that ((1+cos theta)/(1-cos theta))=("cosec"theta + "cot"theta)^(...

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