3 years ago

For which angle theta is cos theta =-1?a) 270b) 360c) 450d) 540

Mathematics

2 answers:

yanalaym [24]3 years ago

7 0

Answer:

540°.

Step-by-step explanation:

On a unit circle, cos θ = -1 at 180°.

However, cos θ has a period of 2π, or 360°. This means that cos θ will equal to -1 again after 2π.

To solve for the angle:

180° + 360° = 540°. This is the next angle at which cos θ = -1.

Elena-2011 [213]3 years ago

6 0

Your answer would be D 540

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For which angle theta is cos theta =-1?a) 270b) 360c) 450d) 540​

For which angle theta is cos theta =-1?a) 270b) 360c) 450d) 540