Answer:
The measure of angle LKJ is 49°
Step-by-step explanation:
<u><em>The correct question is</em></u>
The equation tan−1 = {8.9/7.7} x can be used to find the measure of angle LKJ. What is the measure of angle LKJ?
Round to the nearest whole degree.
see the attached figure to better understand the problem
Let
x -----> the measure of angle LKJ
we know that
![tan(x)=\frac{8.9}{7.7}](https://tex.z-dn.net/?f=tan%28x%29%3D%5Cfrac%7B8.9%7D%7B7.7%7D)
so
![x=tan^{-1}(\frac{8.9}{7.7})](https://tex.z-dn.net/?f=x%3Dtan%5E%7B-1%7D%28%5Cfrac%7B8.9%7D%7B7.7%7D%29)
using a calculator
![x=49.13\°](https://tex.z-dn.net/?f=x%3D49.13%5C%C2%B0)
Round to the nearest whole degree
![x=49\°](https://tex.z-dn.net/?f=x%3D49%5C%C2%B0)
therefore
The measure of angle LKJ is 49°
4x+24=84 4x=60 x=15 length =27 width = 15
A.
5 * 2 = 10
8 * 2 = 16
10 cm by 16 cm is the new dimensions. Area = 160 sq cm. Perimeter = 52 cm.
B.
5 * 3 = 15
8 * 3 = 24
15 cm by 24 cm is the new dimensions. Area = 360 sq cm. Perimeter = 78 cm.
C.
The areas for the different sized photos both still maintain a ratio of 5:8 cm.