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If sin(x+y)=cos(x-y), then find the valu...

If `sin(x+y)=cos(x-y)`, then find the value of `cos^(2)x`.

A

`1//2`

B

3

C

`1//4`

D

5

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CHAMPION PUBLICATION-2019 TIER-II PAPER(3)-EXERCISE
  1. Study the following bar graph and answer the questions given below. ...

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  2. In an examination, 92% of the students passed and 480 students failed....

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  3. If sin(x+y)=cos(x-y), then find the value of cos^(2)x.

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  4. If the perimeter of an isosceles right triangle is 8(sqrt2+1) cm, then...

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  5. The ratio of boys and girls in a school is 27: 23. If the difference b...

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  6. In the given figure, ABCD is a rectangle and P is a point on DC such t...

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  7. If A’s income is 60% less than B’s income, then B’s income is what per...

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  8. In the figure, chords AB and CD of a circle intersect externally at P....

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  9. If x= sqrt(-sqrt3+ sqrt(3+8 sqrt(7+4 sqrt3))) where x>0, then the valu...

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  10. In a triangle ABC, P and Q are points on AB and AC, respectively, such...

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  11. If cosec 39^@=x, then the value of 1/( cosec^2 51^@)+sin^2 39^@+tan^2 ...

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  12. Study the following pie chart and table to answer the question.Total n...

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  13. Study the following pie chart and table to answer the question.Total n...

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  14. Study the following bar graph and answer the questions given below. न...

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  15. If the radius of a cylinder is decreased by 20% and the height is incr...

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  16. Rahul invested equal sums of money at compound interest under two sche...

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  17. In the given figure, the measure of angle A is: दिए गए आकृति में ang...

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  18. The radius and height of a cylinder are in the ratio 4: 7 and its volu...

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  19. The base of a right prism is a square having side of 15 cm. If its hei...

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  20. A sum of Rs.1,50,000 is distributed among three persons -A, B and C- s...

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