#Compound Angle Formulae

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opal orbit
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slender sparrow
# opal orbit

Note that sin(a + b) = sin(a)cos(b) + cos(a)sin(b).
Also, recall what sin(arctan(x)) and cos(arctan(x)) are.

opal orbit
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would i also rewrite the RHS in a similar form by using cos (a+b) with a and b both theta

slender sparrow
queen slate
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you can express everything in terms of sin(theta)

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little bashy but very doable

slender sparrow
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Oh. Well, yeah, such a linear equation can be transformed to a quadratic homogeneous equation.

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But there's no need, really.

opal orbit
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ah thanks i understand how to approach it now

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bit of a stupid mistake on my part as well i didnt work out the value of sin and cos alpha to sub in

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thanks for the help

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