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Solution of the equation 2cos x + 1 = 0 ...

Solution of the equation `2cos x + 1 = 0` is ...........

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The correct Answer is:
`{x|x=2kpipm(2pi)/3k inZ}`
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KUMAR PRAKASHAN-OBJECTIVE SECTION AS PER NEW PAPER SCHEME -Trigonometric Functions (Fill in the blanks)
  1. In DeltaABC, m angleA = 90 , m angle B = 30 and a = 10^@ then b = .......

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  2. In DeltaABC if m angle C = 90^@ than tanA + tanB = ......(where a,b,c ...

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  3. Solution of the equation 2cos x + 1 = 0 is ...........

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  4. Height of the tower and multy storied building is same of 30 mets . Th...

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  5. .......is the angle of elevation of sun if height of building and its ...

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  6. At .........height one can reach by walking x mets with slope 30^@ and...

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  7. Radian value of 47^@ 30' is ......

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  8. 2 Radian = .......... Degree.

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  9. Arc at the circle with length 37.4 cm subtends and angle of 60^@ at ce...

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  10. Angle made by the the arc of length 55 cm at center is ......if length...

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  11. ........is the length of the arc of the circle with radius 28 cm and a...

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  12. Arc of length 15pi subtends an angle (3pi)/4 at centre then radius r =...

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  13. Measure of an angle of the regular polygon having ten sides is ..........

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  14. Length of the arc of circle with radius 5 cm and angle at centre is 15...

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  15. ...........is the measure of an angle in radian through which the pend...

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  16. Graph of sin(x) function repeats its value in ......... Interval lengt...

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  17. 2sin^(2)((pi),(4))+2cos^2((pi),(4))+sec^2((pi),(3)) has value ...........

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  18. cos(pi/3)cos(pi/4) + sin(pi/3) sin(pi/4) .................

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  19. cos((65pi)/4)=.........

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  20. If cot x = - sqrt(5) and x in second quadrant then sin x = ..........

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