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Trigonometry
The Unit Circle Tests
Signs of trigonometric function
Signs of trigonometric function
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Question 1:
1 pts
Use the unit circle to determine the sign of $sin50^\circ$
positive
negative
Question 2:
1 pts
Use the unit circle to determine the sign of $\cos130^\circ$
positive
negative
Question 3:
1 pts
Use the unit circle to determine the sign of $\tan220^\circ$
positive
negative
Question 4:
2 pts
Which of following has positive sign.
$\sin300^\circ$
$\cos300^\circ$
$\tan300^\circ$
$\cot300^\circ$
Question 5:
2 pts
Use the unit circle to determine the sign of $\sin(-100^\circ)$
positive
negative
Question 6:
2 pts
Use the unit circle to determine the sign of $\cot(-210^o)$.
positive
negative
Question 7:
2 pts
In which quadrant do the most trigonometric functions have positive signs?
first
second
third
fourth
Question 8:
3 pts
In which quadrant two trigonometic functions have negative signs?
first
second
third
fourth
Question 9:
3 pts
If $\sin(\alpha)<0$ and $\cos(\alpha)>0$ than the angle $\alpha$ belongs to:
first quadrant
second quadrant
third quadrant
fourth quadrant
Question 10:
3 pts
If $\tan(\alpha)<0$ and $\sin(\alpha)>0$ than the angle $\alpha$ belongs to:
first quadrant
second quadrant
third quadrant
fourth quadrant
Question 11:
3 pts
Which value in the following group has different sign from the others?
$\sin({\frac{4\pi}3})$
$\cos({-\frac{\pi}3})$
$\tan({\frac{5\pi}4})$
Question 12:
3 pts
Which value in the following group has different sign than $\tan({\frac{2\pi}3})$?
$\cos({\frac{2\pi}3})$
$\sin({\frac{2\pi}3})$
$\cot({\frac{2\pi}3})$
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