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Trigonometric ratios behave in different quadrants. In some cases, they behave the same as well and that is why it becomes necessary for us to understand their behavior. To understand the quadrant effect on trigonometric ratios, you need to understand a few trigonometric identities. These trigonometric identities are split into different types:
- Acute Angles Trigonometric Identities
- Supplementary Angles Trigonometric Identities
- Angles Greater Than
or
Trigonometric Identities
- Angles Greater Than
or
Trigonometric Identities
- Angles That Differ by
or
Trigonometric Identities
- Angles That Add Up to
or
Trigonometric Identities
- Angles That Differ by
or
Trigonometric Identities
Supplementary Angles
Two angles are supplementary if the sum is or
radians. So, if two supplementary Angles are added, a straight angle is obtained.
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Angles That Differ by 180° or π Rad
Angles Greater Than 360º
Angles That Differ by 90° or π/2 Rad
Angles That Add Up to 270º or 3/2 π Rad
Angles That Differ by 270º or 3/2 π Rad
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