What is the angle beta?
Hello, what is the size of angle beta? Task 12.
And how should I label the triangles in task 10?
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Since in the triangle all angles must be 180°, we expect 180 – 70 – 60 = 50, so the remaining inner angle is 50° large. The one that lies outside of him is exactly as large, that is also 50°.
Since one has 360° outside, we expect 360 – 50 – 50 = 260. So we now know that the other two angles have 260° on the outside. Now 260° / 2 = 130.
So the angle Beta has 130°.
LG
Sin = anticathete/hypotenuse
Identify counter-cathete r and hypotenuse s.