Trig Functions
Interactive practice questions
Consider the angle $810^\circ$810°.
a
What are the coordinates of the point on the unit circle that corresponds to $810^\circ$810°?
b
Find the value of $\cos810^\circ$cos810°.
c
Find the value of $\sin810^\circ$sin810°.
d
Which of the following are undefined? Choose all correct answers.
$\cot810^\circ$cot810°
A
$\csc810^\circ$csc810°
B
$\sec810^\circ$sec810°
C
$\tan810^\circ$tan810°
D
Easy
2min
Use the figure to find the value of $\sec300^\circ$sec300°.
Easy
< 1min
Use the figure to find the value of $\csc240^\circ$csc240°.
Easy
1min
Use the figure to find the value of $\cot225^\circ$cot225°.
Easy
1min
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