Step-by-step explanation:
So first thing is to determine which trigonometric ratio we use here. Theta is adjacent to 5 and 8 is the hypotenuse, so we should be using Cosine.
So we set up the equation
cos θ = adj/hype
cos θ = 5/8
θ = ![cos^{-1} (5/8)](https://tex.z-dn.net/?f=cos%5E%7B-1%7D%20%285%2F8%29)
θ=51.3178125...
θ=51°
A) x = 3
b) x = -1
c) x = -9
d) x = 25
e) x = 8
f) x = -29
g) x = -1
h) x = 4/6
3x-5y=25 i hope this helps
Answer:
580 cm^2
Step-by-step explanation:
First, find the area of the front and back. 20*10=200
There are 2 sides with 20*10 ( front and back) so we can multiply by 2. 200*2=400
Then, the sides. 3*20=60*2=120
Then, the top and bottom 10*3=30*2=60
400+120+60=580
Answer:
Step 3
Step-by-step explanation: