prove that: cos (sin^(-1) x) = (1-x^2)^(1/2) please help. I don't even know where to start.
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is an angle. Therefore: Recall that in right triangle trigonometry: You can find the adj side using the Pythagorean theorem. Now we can find , which is:
Originally Posted by dee18 prove that: cos (sin^(-1) x) = (1-x^2)^(1/2) please help. I don't even know where to start. Alternatively, if , then:
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