1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Brums [2.3K]
3 years ago
7

Solve the trigonometric equation √2 cos − 1 2 cos + 1 = 0 in the interval [0, 360°). find the exact values of the solutions in d

egrees
Mathematics
2 answers:
azamat3 years ago
8 0
First, you would combine all the like terms- cos(x)(√2 - 12)= -1 
Then you would Isolate x: cos(x) equals -1/(√2 - 12) 
cos(x) equals 0.0944 
x equals cos⁻¹(0.0944) 
x equals 84.57 degrees aka (360-x=275.42 degrees) 
Hope I got this right :/
Elena-2011 [213]3 years ago
7 0
Assuming cos means cos(x); 

Combine all like terms: cos(x)(√2 - 12)= -1 
Isolate x: cos(x)= -1/(√2 - 12) 

cos(x)=0.0944 
x=cos⁻¹(0.0944) 
x= 84.57 degrees or (360-x=275.42 degrees) 

Hope I helped :) 
You might be interested in
Evaluate 3/5r +5/8swhen r =14 and s =8
Illusion [34]

Step-by-step explanation:

14×5=70

8×8=64

(3/70) + (5/64)

= (3×64)+(5×70)

----‐------------------

70×64

= (192+350)/448

=542/448

= 271/224

5 0
2 years ago
I need help i'm really stuck
Ivenika [448]

Answer:

8

Step-by-step explanation:

If the area is 32 and the formula for area of a triangle is base * height / 2, and you have base = 8 and height = x and area = 32, this would be:

8 * x / 2 = 32

Now, solve:

8x/2=32\\4x=32\\x=8

4 0
2 years ago
Read 2 more answers
Question 8 the price of a cup of coffee was $2.55 yesterday. today, the price fell to $2.40 . find the percentage decrease. roun
Alex787 [66]
The answer would be 5.9%
3 0
3 years ago
Melania walked her dog 2 1/5 miles. Cathy walked her dog 1 3/4 times as far as Melania did. How many miles did Cathy walk her do
Step2247 [10]
Make the fractions improper to multiply.2 1/5 becomes 11/5 and 1 3/4 becomes 7/4. multiply the numerators then multiply the denominators. you get 77/20, which is simplest form. don't let teachers feed you that bs about it having to be a mixed number. an improper fraction is way more useful.
5 0
3 years ago
If someone covers 4 laps in 12 minutes what was the speed?
Alisiya [41]
If someone covers 4 laps in 12 minutes, he would be able to cover 1 lap in 3 minutes if that was the question. The question isn’t really clear.
3 0
3 years ago
Other questions:
  • Factorise 2x²-9x+10 (this must be put in two brackets)
    13·2 answers
  • What is the sum of the solution of 2lx-1l-4=-2
    15·2 answers
  • A group of 25 students want to see a drake concert. Tickets for members of drakes fan club cost $20 and tickets for no members c
    13·1 answer
  • Help me out now Please I'm stuck on this
    15·1 answer
  • Hilary bought two new books for $5.25 each and three used books for $2.50 each. Shipping costs $5.00 total for the first two ite
    13·1 answer
  • Please answer this question!! 40 points and brainliest!
    12·1 answer
  • If a train travels 255 miles in 3 hours, how far will the train travel in 5 hours at the same rate?
    12·2 answers
  • PLEASE HELP ASSP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    9·2 answers
  • What whole number is excluded from 0
    11·2 answers
  • Please help, and if you can please explain! :D​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!