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Chloe0095
26.02.2021 •
Mathematics
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Which of the following statements is TRUE based on the information given?
A
If 21 = 45° then 22 + x3 = 90°
B
If Z2 = 70° then 21 + 23 = 110°
с
If 23 = 55° then 24+ 25 = 125
D
If 24 = 60° then 21 + 23 = 120°
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Ответ:
If a tangent segment and a secant segment are drawn to a circle from an exterior point, then the square of the measure of the tangent segment is equal to the product of the measures of the secant segment and its external secant segment (Intersecting Secant-Tangent Theorem)
so
ST²=RO*RT> ST²=23*7> ST²=161
ST=√161> ST=12.69 in
the answer is
ST=12.69 in