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When we have a relation like, for instance,

[itex] f(\theta) + g(\theta) = constant [/itex] where [itex]\theta[/itex] is an angle, does it hold for any angle such that we can do [itex] f(0 \deg) + g (0 \deg) = 0 [/itex] and we would obtain an universal result? I mean, imagine [itex] f(\theta, x) = x \sin \theta [/itex], then

[itex] x = - \frac{g (0 \deg)}{\sin 0\deg} = - \frac{g (45 \deg)}{\sin 45\deg} [/itex]

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# Angle panic

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