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
Alina [70]
3 years ago
14

Find the exact value of cos (1140)°.

Mathematics
1 answer:
slamgirl [31]3 years ago
8 0

now let's recall that a full circle has 360°, so then 1140 = 360 + 360 + 360 + 60.

namely, 1140 is 3 full-go-around the circle and then it lands on the I Quadrant at 60°.  Thus cos(1140°) = cos(60°).

what's that cosine of 60°?  Check the picture below.

You might be interested in
345 millimeters into meters
lutik1710 [3]
<span>345 Millimeters = 0.345 Meters
Have a nice day
</span>
8 0
3 years ago
Read 2 more answers
Please help me!
marusya05 [52]

Answer:


Step-by-step explanation:

Nice summary problem.

<AEC

  • AEC = 360 - 243.5 = 116.5    
  • The number of degrees in 1 rotation of a circle = 360o. You have accounted for 243.5 degrees. What is left over is the answer.

<EAD and <ECD

Both of these are tangents to a circle. Tangents meet radii at 90 degree angles.

<EAD = <ECD = 90 degrees

<ABC

<ABC is 1/2 the central angle. The Central angle is <AEC

  • < AEC = 116.5
  • <ABC = 1/2 * 116.5
  • <ABC = 58.25

<ADC

There are 2 ways of doing this. You should know both of them.

<em><u>One</u></em>

All quadrilaterals = 360 degrees. You know three of the angles. You should be able to find ADC

  • <ADC + 90 + 90 + 116.5 = 360     Add the four angles together.
  • <ADC + 296.5 = 360                   Combine terms on the left
  • <ADC = 360 - 296.5                    Subtract 238.25 from both sides
  • <ADC = 63.5                                 Answer

<em><u>Method Two</u></em>

<ADC = 1/2 (major Arc - Minor Arc)  This formula is fundamental to circle / tangent properties. The Major arc is the larger of the two parts of the circumference of a circle. The Minor arc is the smaller.

  • <ADC = 1/2(243.5 - 116.5)
  • <ADC = 1/2(127)
  • <ADC = 63.5
8 0
3 years ago
(0,1), (1,5),(2,9), (3,13),(4,17)<br> Figure out the rule for x
Julli [10]

Answer:

where in the heck is the x tho

where is x in the equation I am hella confused and I don't understand how to help

8 0
2 years ago
Mario invested $6,000 in an account that pays 5% annual interest compounded annually how much will be there after 2.5 years
Liono4ka [1.6K]

Answer:

$48,000

Step-by-step explanation:

i = \frac{p \times r \times t}{100 }  \\ 6000 =  \frac{p \times 5 \times 2.5}{100 }  \\ 600000 =  12.5 \\ 48000

6 0
2 years ago
A student's tuition was $5530. A loan was obtained for 4/7 of the tuition. How much was the loan?
Sophie [7]
Multiply the two numbers to find the amount of the loan.

5530/1* 4/7= 22120/7= 3160

Final answer: $3,160
5 0
3 years ago
Other questions:
  • PLEASE HELP ILL GIVE BRAINLIEST
    7·1 answer
  • Please help!
    12·1 answer
  • Find the product.<br><br> 76x327
    14·1 answer
  • A flim starts at 20 past 11 in the morning and lasts for 1 hour and 55 mins what time does it finish
    8·2 answers
  • Basic math plz help<br> volume of a cylinder with the given height and radius or diameter problems.
    12·1 answer
  • What is MPTR<br> (x + 28)<br> T<br> S<br> R<br> (2x + 16)
    12·1 answer
  • Find an equation of a line with the x- and y-intercepts below. Use exact fractions when necessary.
    14·1 answer
  • 3. f(x) = x - 3<br> find the inverse
    15·1 answer
  • Lines c and d are parallel. Parallel lines c and d are cut by transversals s and t. Clockwise from top left, the angles formed b
    14·1 answer
  • Henry went to the store with $25.00 and returned home with 3 gallons of ice
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!