What would be a situation in which the lengths of two sides of a right triangle are known, but the measure of an angle is needed.

Never.  If you know two sides of a right triangle you can always find the third using the pythagorean theorem.

 Once all sides are known, you can find the three angles: one is surely right, since you have a right triangle. The other two can be found using the sine law.

Step-by-step explanation:

correct on EDGE2022

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)

the infinity sign

step-by-step explanation: