HELP (05.02 LC) Which equation could be used to find the value of x? Triangle DEF where angle E is a right angle. DE measures x. DF measures 55. Angle F measures 49 degrees.
A. cos 49° = x over 55
B. cos 49° = 55 over x sin
C. 49° = x over 55 sin
D. 49° = 55 over x

Check out the attached diagram for the visual. We have DE = x as the side opposite angle F = 49 degrees and DF = 55 as the hypotenuse.

We'll use the sine rule because it is the ratio of opposite over hypotenuse

So,

sin(angle) = opposite/hypotenuse

sin(F) = DE/DF

Based on your answer choices, nothing matches entirely perfect. Though there are some bits that do match.

It looks like choice C should read sin(49) = x/55, and if so, then choice C is the answer.

b

step-by-step explanation:

the total is 23.97. 0.25% is off so you have to subtracting 25% from 100% and you will get 75% if you convert it to decimal you will get 0.75. you have to find the original because the formula is % times original = total.so you have the total and the % so you just have to plug it in.