5 cm

What is measure of angle A?

3 cm

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Round only your final answer to the nearest

hundredth

4 cm

The graph is missing, so there are two options m∠A = 36.87° or m∠A = 53.13°

Step-by-step explanation:

Assuming that 3 cm, 4 cm and 5 cm are the length of the sides of a triangle, then a right triangle is formed, in which 5 cm is the length of the hypotenuse and 3 cm and 4 cm are the length of the legs.

Angle A is either the angle between 4 cm and 5 cm sides or between 3 cm and 5 cm sides. For the first case:

cos (A) = adjacent/hypotenuse =

cos (A) = 4/5

A = arccos (4/5) = 36.87°

For the second case:

cos (A) = 3/5

A = arccos (3/5) = 53.13°