Which side lengths form a right triangle? A 5, 12, 13 B 4, 4, 8 C 2, 3, 4

A

Step-by-step explanation:

A is the correct answer

Hypotenus=h=13

Adjacent=a=5

Opposite=o=12

We can test by Pythagoras rule if it obey

h^2=o^2+a^2

13^2=12^2+5^2

13x13=12x12+5x5

169=144+25

169=169 it obeyed

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

the correct answer is d

hope this