Question

Подробно
4sin17'cos17'/cos56'


Log4^104 - log4^6,5

Answer 1

$frac{4sin17cos17}{cos56}=frac{2sin34}{cos56}=frac{2sin(90-56)}{cos56}=frac{2cos56}{cos56}=2\\kog_4104-log_46,5=log_4frac{104}{6,5}=log_416=log_44^2=2$