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Daniel [21]
3 years ago
6

Pls anwer the question

Mathematics
1 answer:
lidiya [134]3 years ago
8 0

Remark

Every triangle has 180 degrees. The given triangle is ABC. It can be represented as

A + B + C =180 degrees.

<BOC = 180 - 1/2B - 1/2C The angle bisectors form a triangle with the base.

<BOC = 180 - 1/2(B + C)

B + C = 180 - A from the first relationship.

<BOC = 180 - 1/2(180 - A) Remove the brackets.

<BOC = 180 - 1/2*180 + A/2

<BOC = 180 - 90 + A/2

<BOC = 90 + A/2 which is what we were asked to prove.

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Step-by-step explanation:

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