Open Question: Use the formula cos2a = 2cos2a - 1 to evaluate cos(pi/12) without a calculator?
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18:52 |
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Open Question: Enter this into your calculator :)?
10/5(2+3)+1 =
10/(5*5) + 1 =
10/25 + 1 =
2/5 + 1 = 1.4
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3:41 |
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Open Question: Answer without using a calculator, just mental math, and DO NOT answer if you do not use mental math.?
Answer using ONLY mental math. Estimate if you want.
982.12005x-65*5690/2312^x.15=645
982.12005x-65*5690/2312^x.15=645
Legend-- ^and a number means to the power of ______
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