Answer:
x=4
Step-by-step explanation:
3x=5x-8
3x-5x= -8
-2x= -8
x= -8÷-2
x=4
Step-by-step explanation:
Answer in attached image...
hope it helps
Answer:
answer choice 2
Step-by-step explanation:
Answer:
Step-by-step explanation:
- cotx cos x - cot x = 0
- cotx( cosx - 1) = 0
1. <u>cotx = 0</u>
- x = π/2 + πn
- In the interval [0, 2π] we have π/2 and 3π/2
2. <u>cosx = 1</u>
- x = 0 + 2πn
- In the given interval we have 0 and 2π
<u>So the solution set is:</u>
Answer:

Step-by-step explanation:
Start by drawing out the triangle on the graph:
(See picture)
(By the drawing you can judge me that I am a really bad artist)
Theta and the side lengths are labeled, the hypotenuse has a length of √21 by Pythagora's theorem. Now, time to put everything to the trigonometric functions:

(Suppose that x is theta as I can't type it)
By some basic understanding that's all that I can do.