Suppose an Arc of Length $s$ Lies on the Unit Circle $x ^ { 2 } + y ^ { 2 } = 1$

question 68

Multiple Choice

Suppose an arc of length $s$ lies on the unit circle $x ^ { 2 } + y ^ { 2 } = 1$ , starting at point $( 1,0 )$ and terminating at the point ( $x$ , $y$ ) . Use a calculator to find the approximate coordinates $( x , y )$ . Round coordinates to four decimal places when appropriate.


The unit circle $x ^ { 2 } + y ^ { 2 } = 1$
-s = 5.6

• A)(-0.7756, °°°)
• B)(-0.6313, 0.7756)
• C)(0.7756, -0.6313)
• D)(-0.7756, -0.6313)

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