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Evaluate : 3 cos 80^@ cosec 10^@ + 2 cos...

Evaluate : 3 cos `80^@` cosec `10^@` + 2 cos `59^@` cosec `31^@`

A

1

B

3

C

2

D

5

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The correct Answer is:
D
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UPKAR PUBLICATION -PRACTICE SET-7-PART-III (QUANTITATIVE APTITUDE)
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  2. If the angles of elevation of a ballon from the two consecultive kilom...

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  3. Evaluate : 3 cos 80^@ cosec 10^@ + 2 cos 59^@ cosec 31^@

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  4. The value of 0.65 xx 0.65 + 0.35 xx 0.35 xx 0.35 + 0.70 xx 0.65 is -

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  5. How many numbers between 400 and 800 are divisible by 4, 5 and 6?

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  7. In a camp of 160 students provisions are available for 10 days. If 40 ...

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  8. Three taps A, B, C can fill an overhead tank in 4. 6 and 12 hours resp...

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  9. The perimeter of a rectangle and an equilateral triangle are same. Als...

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  10. A solid spherical copper ball, whose diameter is 14 cm, is melted and ...

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  11. Discount on a pair of shoes marked at Rs. 475 and discounted at 15%, i...

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  12. The cost price of an article is Rs. 100. A discount series of 5%, 10% ...

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  13. A grinder was marked at ₹ 3,600. After giving a discount of 10 % the d...

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  14. If x^(2) + 9 y^(2) = 6 xy then x : y is

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  15. In a school (1)/(10) of the boys are same in number as (1)/(4) of the ...

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  16. The average of 8 numbers is 27. If each of the numbers is multiplied b...

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