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In the circle with center D shown below,...

In the circle with center D shown below, the length of radius `bar(CD)` is 4 cm, the length of `bar(BC)` is 1 cm, and `bar(BC)` is perpendicular to radius `bar(AD)` at B. When `/_ADC` is measured in degree, which of the following expressions represents the length, in centimeters, of `bar(AC)`?

A

`pi/45(sin^(-1)(1/4))`

B

`pi/45(cos^(-1)(1/4))`

C

`(2pi)/45(sin^(-1)(1/4))`

D

`(2pi)/45(cos^(-1)(1/4))`

Text Solution

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The correct Answer is:
A
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