Найдите значение выражения.
1)
8 10 8
4 * 11 : 44
2)
_________
√520² - 264²
3)
44sin64° × cos64°
—————————
sin128°
1)
8 10 8
4 * 11 : 44
2)
_________
√520² - 264²
3)
44sin64° × cos64°
—————————
sin128°
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Answers & Comments
1) не поняла
2)_________ ________________ _______
√520² - 264² = √(520-264)(520+264)=√ 256*784=16*28=448
3)44sin64° × cos64° 22*2sin64° × cos64° 22 sin128°
————————— = —————————= ----------------- = 22
sin128° sin128° sin128°