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The value of sin^(2)5^(@)+sin^(2)10^(@)+...

The value of `sin^(2)5^(@)+sin^(2)10^(@)+sin^(2)15^(@)+ . . . .+sin^(2)90^(@)` is equal to

A

7

B

8

C

9

D

`9(1)/(2)`.

Text Solution

Verified by Experts

The correct Answer is:
D
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KCET PREVIOUS YEAR PAPERS-MODEL TEST PAPER 4-Mathematics
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  2. If p is a prime integer, the set G={1,2, . . . . P-1} will form an abe...

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  3. The value of sin^(2)5^(@)+sin^(2)10^(@)+sin^(2)15^(@)+ . . . .+sin^(2)...

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  4. (sin^(3)A+sin3A)/(sinA)+(cos^(3)A-cos3A)/(cosA) is equal to

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  5. If costheta=((acosphi+b))/((a+bcosphi)), then the value of tan (theta/...

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  6. If (sinA+sinB=a) and (cosA+cosB=b) then the value of cos(A+B) is equal...

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  7. The value of tan[2" tan"^(-1)(1)/(5)-(pi)/(4)] is equal to

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  8. The value of cot^(-1)9+"cos ec"^(-1)((sqrt(41))/(4)), is equal to

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  9. Value of [2(Cos15^(@)+isin15^(@))]^(6), is equal to

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  10. The solution set of sin^(2)theta=costheta+(1)/(4), in the interval 0le...

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  11. If the equation hxy+gx+fy+c=0(h!=0), represents a pair of straight l...

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  12. The orthocentre of the triangle whose sides are given by equations x=1...

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  13. The points (1,3) and(5,1) are the opposite vertices of a rectangle. Th...

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  14. If angle C of the triangle ABC is right angle and the coordinates of A...

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  15. The number of common tangents to the circles x^(2)+y^(2)-x=0 and x^(2)...

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  17. The focus of the parabola 2y=x^(2)+2x+2 is

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