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Mathematics 16 Online
OpenStudy (book):

Help with some math problems?

OpenStudy (book):

OpenStudy (book):

@Salty

OpenStudy (salty):

hi

OpenStudy (book):

help me

OpenStudy (dumbcow):

<TAN and <TRI are corresponding angles, therefore are equal. Both triangles share angle <T Triangles are similar by AA postulate. Similar triangles corresponding sides are proportional \[\frac{TI}{TN} = \frac{TR}{TA}\] \[\frac{TI}{12}= \frac{10}{8}\] \[TI = 15\] Therefore NI = 3

OpenStudy (book):

Is that part a?

OpenStudy (salty):

both a and b

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