meerkat18 meerkat18

03-08-2016
Mathematics

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"Which statement about circle O is necessarily true, assuming and are tangents to circle O?
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Which statement about circle O is necessarily true assuming and are tangents to circle O class=

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16-08-2016

Among the statements, this is the true one.

∠BCO is complementary to ∠BOC

ΔBCO is a right triangle. B is 90°.

Interior angles of a triangle = 180°. With B as 90°, the remaining angles, C and O, must total 90°. Thus they are complementary.

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