To find: The formulae for
The required formulae are:
Given data: The diagram showing angles
Method/Formula used:
Every point on the circle is at distance equal to radius of the circle.
Calculation:
Let O be the center of the unit circle with radii OB and OA and ACB the right angle triangle.
Also,
In right angle triangle ABC ,
Substitute
In triangle, ACB
Substitute
Squaring both sides
Solve further,
Also, in triangle, ACB
Substitute
Squaring both sides
Further,
Substitute
Therefore,
Chapter 10 Solutions
Holt Mcdougal Larson Algebra 2: Student Edition 2012
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