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Fill in the blanks If cos^2theta-sin^2 ...

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If `cos^2theta-sin^2 theta = 1/x` (x>1), then `cos^4 theta- sin^4 theta`=___.

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UNITED BOOK HOUSE-GARDEN REACH BIHARI DAS GIRL'S -EXERCISE
  1. If in a quadratic equation ax^2 + bx + c = 0 (a le 0) b^2 = 4ac, then ...

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  2. If the length of the sides of two triangles are in proportion, then tw...

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  3. Fill in the blanks If cos^2theta-sin^2 theta = 1/x (x>1), then cos^4 ...

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  4. The shape of a pencil with one end sharpened is the combination of a c...

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  5. Fill in the blanks Median of the data 2,3,4,5,6is.

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  6. Write True or False: The compound interest will be always less than ...

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  7. True or false: The compound ratio of ab : c^2 ,bc : a^2 and ca : b^2 i...

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  8. Only one circle can be drawn through three non-colinear points.

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  9. Write True or False: Value of sin^25theta+cos^25theta = 5

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  10. Write True or False: By melting a solid right circular cylinder a cu...

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  11. Write True or False Mode of 3,4,5,2,3,4,1,6,4,2 is 4.

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  12. The rate of simple interest per annum reduces from 4% to 3 3/4% and fo...

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  13. In a business capital of A is 1 1/2 times of the capital of B. If the...

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  14. If (2x)/3=(4y)/5=(7z)/9 then find the value of (4x+12y-21z)/(3y).

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  15. If x alpha yz and y alpha zx, then show that (z!=0) is a constant.

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  16. AB is the diameter of a semicircle with length of radius 4 cm C is an...

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  17. The ratio of the consequtive three angles of a cyclic quadrilateral is...

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  18. In triangleABC, if AB = (2a - 1) cm, AC = 2sqrt2a cm and Bc = (2a + 1)...

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  19. If tan theta = 4/3, find the value of (sin theta + cos theta).

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  20. If x = a sec theta and y = b tan theta, then find the relation between...

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