3 years ago

Solve the following trigonometric question: cos x=3 cos x-2

Mathematics

1 answer:

bija089 [108]3 years ago

3 0

Answer:

x = 0°

Step-by-step explanation:

$\cos x = 3 \cos x - 2 \\ 2 = 3 \cos x - \cos x \\ 2 = 2\cos x \\ \cos x = \frac{2}{2} \\ \cos x =1 \\ \cos x =\cos 0 \degree \\ \huge \red{ \boxed{x = 0 \degree}} \\$

You might be interested in

Mma is training for a 10-kilometer race. She wants to beat her last 10-kilometer time, which was 1 hour 10 minutes. Emma has alr

Vsevolod [243]

Answer is D
Emma has to run 10 minutes longer.
The answer is 70>t+55

6 0

3 years ago

Read 2 more answers

How to solve sets in mathematics

FinnZ [79.3K]

Answer:

Sets, in mathematics, are an organized collection of objects and can be represented in set-builder form or roster form. Usually, sets are represented in curly braces {},

For example, A = {1,2,3,4} is a set.

5 0

3 years ago

There's six questions. WILL AWARD BRAINLIEST!!!!

lina2011 [118]

Answer:

Question 1: 4

Question 2: 16

Question 3: 34

Question 4: 46

Question 5: Subtraction

Question 6: Multiplication

Step-by-step explanation:

8 0

3 years ago

To avoid a storm, a passenger-jet pilot descended 0.57 mile in 0.6 minute. What was the plane's average change of altitude per m

Elan Coil [88]

Answer:

0.95 miles/minute

4 0

2 years ago

Pedro bought lb of red sand and lb of brown sand to refill his sand box. Both types of sand cost $4.60 a pound. How much did Ped

Doss [256]

If we know that Pedro bought 1 $\frac{1}{4}$ pounds of red sand, and 5 $\frac{1}{2}$ pounds of brown sand, and they both cost $4.60, then we just have to add the individual amounts of sand, since they cost the same.

$1 \frac{1}{4} + 5 \frac{1}{2} = 6 \frac{3}{4}$

So Pedro bought $6 \frac{3}{4}$ lbs of sand overall. Now, we just need to multiply the cost per pound by the total amount of sand he bought.

$6 \frac{3}{4} * 4.6 = 31.05$

Pedro spent $31.05 on sand, which is answer choice B.
Hope that helped =)

4 0

3 years ago

Read 2 more answers