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wioBest ResponseYou've already chosen the best response.1
Split it up into \[ \sin(8\pi/2 + 3\pi/2) = \sin(4\pi + 3\pi/2) \]Then use: \[ \sin(x+y) = \sin(x)\cos(y)+\sin(y)\cos(x) \]
 one year ago

starburst.t95Best ResponseYou've already chosen the best response.0
Why do you split it up?
 one year ago

wioBest ResponseYou've already chosen the best response.1
Because you can find the exact value for angles \(4\pi\) and \(3\pi/2\) very easily.
 one year ago

campbell_stBest ResponseYou've already chosen the best response.1
because of the cyclic nature of sin(x) you just need to find \[\sin(\frac{3\pi}{2})\]
 one year ago
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