Understanding coterminal angles in trigonometry
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- Опубліковано 11 вер 2024
- 👉 Learn the basics of co-terminal angles. An angle is a figure formed by two rays that have a common endpoint. The two rays are called the sides of the angle while the common endpoint is called the vertex of the angle. We measure angles starting from the positive x-axis, i.e. the initial side of an angle measure is usually the positive x-axis. The angle measured in the anti-clockwise direction is called a positive angle while a negative angle is measured in the clockwise direction.
Two or more angles are said to be co-terminal when they have the same initial and terminal sides. Coterminal angles are found by adding/subtracting 360 degrees (for degree angle measure) or 2pi (for radian angle measure) to/from the given angle.
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I love when you pointed out subtracting by 360 twice. I had to find a negative coterminal angle of 660, so 660 - 720 = -60
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What is the coterminal angle ? The positive one or the negalive
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when would we use co terminal angles in trigonometry
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if negative?
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