Question

Кут А трикутника АВС дорiвнюе 70 градусiв , а кут С- на 10 градусiв бiльший за кут А . Знайдiть кут В

Answer 1

<A+<B+<C=180;⇒<B=180-(<A+<C);
<A=70(градусів);
<C=70+10=80(градусів);
<B=180-(70+80)=180-150=30(градусів)

Answer 2

1)  40+10=50 градусів ( кут С)
2) 180-40-50=90 градусів ( кут В)

Сума всіх кутів трикутника дорівнює 180 градусів

Answer 3

Finding the Angle B in Triangle ABC

To find the angle B in triangle ABC, we are given that angle A is 70 degrees and angle C is 10 degrees larger than angle A. We need to calculate the value of angle B.

Let's use the given information to solve for angle B.

Solution:

1. We are given that angle A is 70 degrees. 2. Angle C is 10 degrees larger than angle A. Therefore, angle C is 70 + 10 = 80 degrees. 3. The sum of the angles in a triangle is always 180 degrees. 4. So, we can calculate angle B by subtracting the sum of angles A and C from 180 degrees.

Angle B = 180 - (angle A + angle C) = 180 - (70 + 80) = 180 - 150 = 30 degrees.

Therefore, the angle B in triangle ABC is 30 degrees.

I hope this helps! Let me know if you have any further questions.