In triangle ABC, angle C = 90 degrees, angle A = 70 degrees. CD-, bisector Find the angles of the triangle BCD.

univerkov | September 26, 2021 | education

The sum of the angles of a triangle is 180 °, which means

<B = 180 ° – <C – <A = 180 ° – 90 ° – 70 ° = 20 °;

CB is the bisector of angle C, which means

<DCB = 1/2 <C = 90 °: 2 = 45 °;

<BDC = 180 ° – <B – <DCB = 180 ° – 20 ° – 45 ° = 115 °;

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