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Jenny0735
9 months ago

So you know a^2+b^2=c^2. However, this applies only to rectangular triangles.

That’s why you divide the triangle perpendicularly through the middle, then you have two identical rectangular triangles and can calculate the height. In this case, c is always the side opposite the right angle:

(7.2)^2 +h^2=12,65^2

Jenny0735
9 months ago

I got 10.4.

must first subtract 7,2^2 on both sides of equation and then pull the root on both sides

Rubezahl2000
9 months ago

The height h divides the triangle into 2 right-angled triangles and with right-angled triangles you can apply the set of Pythagoras:

a=12,65 is the hypotenuse
h is the one cat
and half of the base =7,2 is the other catheter of the rectangular triangle

h2 + 7.22 = 12,652

h2 = 12,652 – 7,22

You can do the rest yourself…

18undFreundin
9 months ago

a*sin(beta)=b*sin(alpha) or a:b=sin(alpha):sin(beta)