How do I calculate alpha?
I can't seem to get any further with subtask b
I know so far: D/K = 1 => sin(ß) / sin(d) = 1 => the two sine values are equal
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Based on the expression for the amount of force D_2
is simply required for the new angle alpha_2 the double force and formulates this. The resolution according to alpha_2 then supplies 2.5°, i.e. half the angle.
This may surprise at first glance. But the sinusoidal or arcus sinusoidal function is still almost linear in the range of small angles