tydukes10
24.05.2021 •
Mathematics
Using the diagram below l, if angle P is 78 degrees and arc CB is 46, find arc AC
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Ответ:
arc AC = 202°
Step-by-step explanation:
Based on the tangent-angle secant rule, the angle formed outside a circle by a secant and a tangent is equal to one-half the difference between the far arc and the near arc.
Thus:
m<P = ½(arc AC - arc CB)
Substitute
78° = ½(arc AC - 46°)
Multiply both sides by 2
2*78 = arc AC - 46
156 = arc AC - 46
Add 46 to both sides
156 + 46 = arc AC
202° = arc AC
arc AC = 202°
Ответ:
It is C, (10.75) squared
Step-by-step explanation:
It is not A, I did the test. so not (2)(10.75). So the only option is C