Question

if
$\frac{ \cos(a) }{ \sin(72) ?} = 1$
where A is an acute
an acute angle then the value of A
a) 72. b) 108 ° c) 18° d) 369​

Answer 1

Answer:

The value of A is $18^{o\\}$, because the value of Sin $72^{o}$ and the value of Cos $18^{o\\}$ is the same