What is the x-intercept of the graph that is shown below?
1 answer:
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Answer:
The unit circle centered at the origin in the Euclidean plane is defined by the equation:
Given an angle , there is a unique point P on the unit circle at an angle θ from the x-axis, and the x- and y-coordinates of P are:
Consequently, from the equation for the unit circle:
the Pythagorean identity.
