Question

Just one question.

Answer 1

Y is the middle point of WZ, ok?

Answer 2

\(\triangle WXY\) is a right triangle, right?
You have \(\angle YWX= 15^0\), and WY , use sin to get XY

Answer 3

\[\sin(15) = 0.25\]

Answer 4

And??

Answer 5

Do you want me to find sin(56) as well?

Answer 6

. Oh, I am sorry, I misread, use tan (15) not sin
tan(15) =\(\dfrac{XY}{WY}\)

Answer 7

\[\tan(15) = 0.26\]

Answer 8

Compensate, hihihi
XY= tan(15)* WY = 0.2679*28=7.5012
convert to inch, then you get the answer

Answer 9

Where did the 28 came from?

Answer 10

56/2 =28 because WY = 1/2 WZ

Answer 11

Okay, thanks.

Answer 12

It would be C?

Answer 13

Sorry for my mistake. :)
One more thing, have to convert to inch.

Answer 14

I would say D

Answer 15

Oh yeah, round up.

Answer 16

@TwinYang why D?? 7.5.... feet is 7 feet and 0.5 feet, and 0.5 feet = 6 in. Am I right?

Answer 17

oh yeah I just checked your calculations and i forgot to divide 56 by 2 :P.

Answer 18

:)