14 in 3 in

What is the area of the right triangle above?

A.
42 in2
B.
84 in2
C.
10.5 in2
D.
21 in2

What are the related frequencies to the nearest hundredth of the columns of the two way table? group 1: a-102 b-34group 2: a-18 b-14edited: i don’t have all day to be waiting for an answer. i figured it out.

The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?

Can someone me with #s 8, 9, and 11. with just one of the three also works. prove using only trig identities.