Question

Please help this is due soon!!

Answer 1

The cosine of A is equal to
`(3√(58))/(58)\\`

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 = (3)/(√(58))\\A = (3√(58))/(58)\\`