Without using a calculator, compute the sine and cosine of 210° by using the reference angle. What is the reference angle? degrees. In what quadrant is this angle? (answer 1, 2, 3, or 4) sin(210°) = cos(210°) = (Type sqrt(2) for √2 and sqrt(3) for √3.)
Without using a calculator, compute the sine and cosine of 210° by using the reference angle. What is the reference angle? degrees. In what quadrant is this angle? (answer 1, 2, 3, or 4) sin(210°) = cos(210°) = (Type sqrt(2) for √2 and sqrt(3) for √3.)
Calculus: Early Transcendentals
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ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
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![## Trigonometry Practice - Reference Angles
### Without using a calculator, compute the sine and cosine of \( 210^\circ \) by using the reference angle.
1. **What is the reference angle?**
\[\boxed{\phantom{XX}}\] degrees.
2. **In what quadrant is this angle?**
\[\boxed{\phantom{XX}}\] (answer 1, 2, 3, or 4)
3. **Compute the sine and cosine:**
- \(\sin(210^\circ) =\)
\[\boxed{\phantom{XXXXXXXXXXXXXXXXX}}\]
- \(\cos(210^\circ) =\)
\[\boxed{\phantom{XXXXXXXXXXXXXXXXX}}\]
### Note:
(Type `sqrt(2)` for \(\sqrt{2}\) and `sqrt(3)` for \(\sqrt{3}\).)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc94e4e1c-3d4e-4486-b985-b30353acec86%2Fde42e4a6-715e-4c9c-bf5c-d7f82f5c513e%2F6s1i2pa_processed.png&w=3840&q=75)
Transcribed Image Text:## Trigonometry Practice - Reference Angles
### Without using a calculator, compute the sine and cosine of \( 210^\circ \) by using the reference angle.
1. **What is the reference angle?**
\[\boxed{\phantom{XX}}\] degrees.
2. **In what quadrant is this angle?**
\[\boxed{\phantom{XX}}\] (answer 1, 2, 3, or 4)
3. **Compute the sine and cosine:**
- \(\sin(210^\circ) =\)
\[\boxed{\phantom{XXXXXXXXXXXXXXXXX}}\]
- \(\cos(210^\circ) =\)
\[\boxed{\phantom{XXXXXXXXXXXXXXXXX}}\]
### Note:
(Type `sqrt(2)` for \(\sqrt{2}\) and `sqrt(3)` for \(\sqrt{3}\).)
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