Which of the following could be the side measures of a right triangle? a) 5 ft, 4 ft, 3 ft b) 6 ft, 4 ft, 2 ft c) 11 ft, 10 ft, 6 ft d) 15 ft, 10 ft, 5 ft

A

Step-by-step explanation:

Because a^2+b^2=c^2 in a right triangle by Pythagorean's Theorem.  So, the only one that works is 3^2+4^2=5^2 because 9+16=25.

A) 5 FT, 4 FT, 3 FT

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,

c

c

c

c

c

c

c

cc

c

step-by-step explanation: