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Earn +20 ptsQ: What is PI exactly equal to?
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What is cos squared of pi over 4?
If working in radians, the cosine of one-quarter of pi is equal to the square root of 0.5. Squaring this gives 0.5, or exactly one-half.
Can the problem of computing the number pi be solved exactly?
No. Pi is a neverending number.
What is the value of pi 3.14?
pi is approximately equal to: 3.141592653589793238462643383279...
What is 12.8 times pi?
When you multiply 12.8 times pi the exact answer is12.8 Pi, but you can round off the answer to40.192because pi is about equal to 3.14.
What is the sin pi over 4?
sin(pi/4) and cos(pi/4) are both the same. They both equal (√2)/2≈0.7071■
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