nessuhbae6722
04.12.2019 •
Mathematics
Find the exact value of each expression. do not use a calculator.
1. cos^-1 0
2. sin^-1
3. tan^-1 √3/3
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Ответ:
We know that all 3 angles of a triangle are 180 degrees. And we have two angles of a triangle which is all we need. We add these two angles 68+80 and we get 148
Then we take 148 and subtract is from 180. 180-148 is 32. Therefore our third angle is 32