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Reading Assignment There are 2 important identities that you should be aware of. We will not use them all that much in this class as they are more useful in a Geometry centered Trig course whereas this is more of a functional Trig course. In any case it is good to be aware of these identities especially if you have never seen them before. If necessary I will give you these identities on an exam so you need not memorize them. You can watch the proofs of these identities at this link, and I encourage you to just that. As a warning this guy is a bit slow for me so I suggest watching him at 1.5X speed or even 2X. https://www.khanacademy.org/math/trigonometry/less-basic-trigonometry/law-sines-cosines/v/law-of-cosines • Given any triangle with sides a, b, c and angles α opposite a, β opposite b, and θ opposite c as depicted below we have that Law of Cosines: a2 = b2 + c2 − 2bc cos(α) Law of Sines: a b c = = sin(α) sin(β) sin(θ) 1