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If we convert sin(-566^(@)) to same trig...

If we convert `sin(-566^(@))` to same trigonometrical ratio of a positive angle lying between `0^(@) and 45^(@)`, then we get :

A

`cos26^(@)`

B

`-cos26^(@)`

C

`sin26^(@)`

D

`-sin26^(@)`

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem of converting `sin(-566°)` to the same trigonometric ratio of a positive angle lying between `0°` and `45°`, we will follow these steps: ### Step-by-Step Solution: 1. **Use the property of sine for negative angles**: \[ \sin(-\theta) = -\sin(\theta) \] Applying this property: \[ \sin(-566°) = -\sin(566°) \] **Hint**: Remember that the sine function is odd, which means that the sine of a negative angle is the negative of the sine of the corresponding positive angle. 2. **Reduce the angle 566° to a standard position**: To find an equivalent angle, we can subtract multiples of 360° (since sine has a periodicity of 360°): \[ 566° - 360° = 206° \] So, we have: \[ \sin(566°) = \sin(206°) \] Therefore: \[ \sin(-566°) = -\sin(206°) \] **Hint**: When reducing angles, always subtract 360° until the angle is between 0° and 360°. 3. **Determine the reference angle for 206°**: The angle 206° is in the third quadrant. To find the reference angle, we subtract 180°: \[ 206° - 180° = 26° \] Thus: \[ \sin(206°) = -\sin(26°) \] Therefore: \[ \sin(-566°) = -(-\sin(26°)) = \sin(26°) \] **Hint**: The reference angle is found by subtracting the angle from 180° or 360° depending on the quadrant. 4. **Final answer**: Since we need the sine of an angle between `0°` and `45°`, we have: \[ \sin(-566°) = \sin(26°) \] Thus, the final answer is: \[ \sin(-566°) = \sin(26°) \] ### Conclusion: The sine of `-566°` converts to the sine of `26°`, which lies between `0°` and `45°`.
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ARIHANT SSC-TRIGONOMETRY-EXERCISE(LEVEL - 1)
  1. The value of tan(180+theta).tan (90-theta) is :

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  2. log tan 1^@+log tan2^@+log tan3^@+...log tan89^@=

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  3. If we convert sin(-566^(@)) to same trigonometrical ratio of a positiv...

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  4. From the Masthead of a ship, the angle of Depression of boat is 60^@, ...

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  5. A portion of a 30 m long tree is broken by tornado and the top struck ...

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  6. Two posts are 25 m and 15 m high and the line joining their tips makes...

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  7. The angle of elevation of the top of a tower at a point G on the groun...

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  8. If x=sec theta+tan theta, y = sec theta-tan theta, then the relation b...

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  9. The value of theta for which sqrt3 cos theta-sin theta=1 is :

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  10. If tan theta =(4)/(3), then the value of sqrt((1+cos theta)/(1-cos the...

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  11. If the arcs of the same length in two circles subtend angles of 60^(@)...

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  12. In the third quadrant, the values of sin theta and cos theta are :

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  13. The value of (cot 40^(@))/(tan50^(@))-(1)/(2)(cos35^(@))/(sin55^(@)) i...

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  14. The value of theta(0le theta le pi//2) stisfying the equation sin^(2)t...

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  15. If cos theta=(4)/(5) and 0lt theta lt 90^(@), then the value of (3cos ...

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  16. Maximum value of (cos theta-sin theta) is :

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  17. The value of sin105^(@) is :

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  18. If tan theta=t, then sin 2theta is equal to :

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  19. If tan theta=sqrt2, then the value of theta is :

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  20. If tan theta=2-sqrt3, then tan(90-theta) is equal to :

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