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11 grade maths others

Find the value of cos 270°

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10 Months agoGrade
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1 Answer

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ApprovedApproved Tutor Answer10 Months ago

The value of cos 270° can be determined using the unit circle. At 270 degrees, the angle points directly downward along the negative y-axis.

Understanding the Unit Circle

In the unit circle, the coordinates of a point corresponding to an angle θ are given by (cos θ, sin θ). For 270°, the coordinates are:

  • x-coordinate (cos 270°) = 0
  • y-coordinate (sin 270°) = -1

Final Result

Thus, the value of cos 270° is 0.