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Evaluate the following without a calculator and leave in radical form cos 90 sin 270?
Wiki User
∙ 13y ago
First draw the graph.
Label A S T C according to the order of plane.
Draw a 90 degree angle.
You see it's between All and Sin, so the answer is 0
Draw 270 degree angle.
You see it's between Tan and Cos, so the answer is -1
And when you mix them together, 0 times -1 = 0.
Wiki User
∙ 13y ago
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