Jim has cds that he is going to give away. he lets his best friend choose 2 of the 8 cds. how many different groups of 2 cds are possible?

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 answer is two. hope this !