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Mathematics 13 Online
OpenStudy (anonymous):

find the measure of the numbered angle. a. 70 b. 75 c. 80 d. 85

OpenStudy (anonymous):

diagram?

OpenStudy (anonymous):

|dw:1340478566740:dw|

OpenStudy (anonymous):

well, you know that the other arc is 360-220 = 140, for starters.

OpenStudy (anonymous):

there's a theorem that says the angle made by a secant and tangent = 1/2 of the minor arc. what is 1/2 of 140?

OpenStudy (anonymous):

what does of mean....

OpenStudy (anonymous):

what is 140/2?

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