1 | ||
cos 120 = cos (180−60) = − cos 60 = − | ||
2 |
1 | ||
c2 = a2 + b2 − 2ab * (− | ) = a2 + b2 + ab | |
2 |
3 | ||
lub 3b = 5a −−−> a = | b | |
5 |
3 | 7 | |||
c = 2b−a = 2b − | b = | b | ||
5 | 5 |
3 | 7 | ||
b , b , | b | ||
5 | 5 |
5^2 | 52 |
2^{10} | 210 |
a_2 | a2 |
a_{25} | a25 |
p{2} | √2 |
p{81} | √81 |
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