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
ahrayia [7]
3 years ago
7

If sin ? = 12 over 37, use the pythagorean identity to find cos ?. cos ? = ± 35 over 37 cos ? = ± 23 over 37 cos ? = ± 35 over 1

2 cos ? = ± 20 over 35
Mathematics
2 answers:
kotegsom [21]3 years ago
7 0
If sin x = 12/37, we have to find cos x.
The identity:
sin² x + cos² x = 1
( 12/37)² + cos² x = 1
144 / 1369 + cos² x = 1
cos² x = 1 - 144/1369
cos² x = 1369/1369  - 144/1369
cos² x = 1225 / 1369
cos x = +/- √ 1225/1369 = +/- 35/37
Answer:
A ) cos ? = +/- 35 over 37
tino4ka555 [31]3 years ago
7 0
SOH CAH TOA
Lets us know that the Sin of ? Is 12/37; meaning the opposite side is 12, and the hypotenuse is 37. Using the Pythagorean Theorem, we know that 37^2-12^2=B^2 (B being the adjacent side). Once solved, we learn B is 35. Going back to SOH CAH TOA, we know that Cos ?= 35/37; the first option.

Hope this helps!
You might be interested in
A paper popcorn cone measures 4 inches in diameter and 9 inches high. What is the volume of popcorn that can be contained within
GaryK [48]
If the volume of a cone is V=π(r*r) * h/3
radius=2
V=<span>π(2*2) * (9)/3
3.14(4) * (3)
Volume=37.68 inches cubed</span>
5 0
3 years ago
PLEASE HELP 99 POINTS PLUS BRAINIEST ANSWER.
Mrac [35]
1. Percent error is | \frac{guess-actual}{actual}|
The guess is 15.5mi, and the actual distance is 14.5 mi.
Percent error is | \frac{15.5-14.5}{14.5}|=0.69=6.9%

2. The cost will be $31.95*(1+0.075) = $34.35
The 1 represents 100% of the original amount of $31.95, and now we add 7.5% (0.075) to the 100%. In other words we multiply $31.95 by 107.5%.

3. His commission will be $165 out of $4125, or $165/$4215 = 0.039 = 3.9%

4. The principal (amount of money you start with) is $12000, and the interest rate is 15% of that.
15% of $1800 = 0.15*$12000 = $1800
4 0
3 years ago
Read 2 more answers
Decrease 150km in the ratio 2:5​
SIZIF [17.4K]

2:5 = 2/5

2/5 x 150

2 x 30= 60km

6 0
3 years ago
The function is given by the formula f(x)=3x+2. a Find f(7).
Artyom0805 [142]

Answer:

Step-by-step explanation:

plug in 7

f(x)=3(7)+2

multiply 3 and 7 which is 21

and 2

f(x)=23.

5 0
3 years ago
A cafeteria used 5 gallons of milk and preparing like how many 1 quart containers of milk did the cafeteria use
Elden [556K]
The cafeteria used 20, 1 quart containers. <span />
7 0
3 years ago
Read 2 more answers
Other questions:
  • If the ratio of the radii of two spheres is 1 : 8, what is the ratio of the surface areas of the two spheres?
    15·1 answer
  • A store is having a sale where everything is 15% off. Which expression below does not represent the cost of an item in the store
    9·1 answer
  • When graphing a linear function in slope-intercept form, why do you have to plot the y-intercept first? Why can't you use the sl
    7·1 answer
  • A line has a slope of - 4 and includes the points (6,v) and (3,3). What is the value of v?
    14·1 answer
  • What is the slope of a line that is parallel to the line represented by the equation y = -2/5x + 4/5
    12·2 answers
  • Use substitution to solve the system of equations​
    15·2 answers
  • Calisto Publishing Co. sells graphic novels and comics to a large retailer for $7.50 per book,
    9·1 answer
  • I need help I need this plz
    13·1 answer
  • PLEASE HELP I WILL GIVE BRAINLIEST IF 2 PEOPLE ANSWER! Find the area of a square with side length x when x is equal to the given
    14·1 answer
  • What is the answer to 2/5x = 5
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!