How do I find the exact value of an expression like this one?
when sin(x)= 1/3 and x is in the range 0-90 degrees.
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Originally Posted by Prove It . Yeah, that’s what I thought, but what should I do when I have this?
u=(√2/2)sin(x) + (√2/2)cos(x)
You know that .
You should also know that from the Pythagorean Theorem.
That means .
Allright! Got it now. I assume you mean:
cos(x)=√8/3 not √10/3
That gave me the right answer. Thanks!
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