Question

Please help this is due soon!!

Answer 1

Answer:

The cosine of A is equal to $\frac{3\sqrt{58}}{58}$

Step-by-step explanation:

Cosine is is calculated as adjacent over hypotenuse.  The line adjacent to A  is 3 in length.

So we can say that the cosine is equal to 3/√58, but need to multiply it by √58 / √58 to ensure we have a non-radical denominator

$A = \frac{3}{\sqrt{58}}\\A = \frac{3\sqrt{58}}{58}$