Tom wants to reach second floor window on a house that is 20 feet above ground. if he must put the ladder at a 70° angle to the ground, how long must the ladder be?

21.28 feet

Step-by-step explanation:

Using the attached image, the length of the ladder is x. This represents the hypotenuse side of the right angled triangle that was formed. The height of the window from the floor is the opposite side. Thus going by SOH CAH TOA,

sin 70° = 20/x

x = 20/sin 70°

= 21.28 feet

The ladder must be 21.28 feet long

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.