Question

Срочно!!! sin(π/2+t)=?. cos(3π/2+t)=?. sin(2π+t)=?. ctg(2π+t)=?

Answer 1

$sin (frac{pi}{2} + t) = cost$
$ctg(2pi + t) = ctgt$
$cos( frac{3pi}{2} + t )= - cost$
$sin(2pi + t) = sint$