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Fill in the blanks If sin(theta-30^@)=...

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If `sin(theta-30^@)=1/2` then `cos theta`=_____.

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UNITED BOOK HOUSE-DAULATPUR DALUICACHA BHARATI VIDYALAYA-EXERCISE
  1. Fill in the blanks Conjugate surds of (sqrt3-5) is.

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  2. In ABCD is a cyclic parallelogram then angleA=

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  3. Fill in the blanks If sin(theta-30^@)=1/2 then cos theta=.

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  4. Fill in the blanks Number of surfaces of a solid hemisphere is.

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  5. Fill in the blanks If the mean of n numbers x1,x2,x3,….,xn is barx t...

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  6. In a business, the ratio of the capital of Rajus and Asif is 5:4 and i...

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  7. To warn ships for underwater rocks, a lighthouse spreads a red colored...

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  8. If two circles of radii 7 cm and 3 cm touch each other extermally, the...

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  9. cos^2 20^@+cos^2 70^2 = 1.

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  10. Write true or false: If the ratio of the total surface area of two cu...

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  11. Define Assumed Mean Method Formula elaborately.

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  12. In a partnership business, the ratio of the capital of Pritha and Rabe...

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  13. What is the rate of simple interest per annum, when the interest of so...

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  14. Calculate the compound ratio of a:bc.b:ca and c:ab.

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  15. If 2x + 1/x = 2, then find the value of (x)/(2x^2+x+1).

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  16. PQ and AB are two equal chords of a circle with centre O, If anglePOQ=...

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  17. AB is the diameter of a semicircle with radius 4 cm in length and angl...

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  18. ABCD is a cyclic trapezium having AD||BC. If angleABC = 70^@ then angl...

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  19. If tan(theta+15^@)= sqrt3 then sin theta+ cos theta=?

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  20. If the number of surface of a cuboid is x, the number of edges is y, t...

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