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
kati45 [8]
3 years ago
8

If sina4/5 find cosa​

Mathematics
1 answer:
DerKrebs [107]3 years ago
4 0

Answer:

cosa = 3/5

Step-by-step explanation:

Use Trignometrical identity cosa =  √ 1 − sin ^2a

cos a =  √ 1 − 16 /25  =  √ 9 /25  =  3 /5

You might be interested in
Question 1 (4 points)
pashok25 [27]

Answer:

LOOK BELOW

Step-by-step explanation:

Question 1 is false and question 2 is true.

hope this helps and add me!

4 0
3 years ago
What is the measure of U
iris [78.8K]

Answer:

U = 48

Step-by-step explanation:

The sum of the angles of a triangle add to 180 degrees

x+21 + x+23 + x+61 = 180

Combine like terms

3x + 105 = 180

Subtract 105 from each side

3x+105-105 = 180-105

3x = 75

Divide by 3

3x/3 = 75/3

x = 25

We want angle u

x+23

25+23

48

6 0
3 years ago
Read 2 more answers
I need help in finding these diagrams. Geometry.
SashulF [63]
I hope this helps you



56+35+CB=180


CB=91


AE=117


AEC=180+56=236


BDA=89+56+180=325
8 0
3 years ago
What is the slope of the line with equation y=-5x
harina [27]
An equation in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

In this case, our y-intercept is 0, so we're left with y = -5x.

-5 is in the place of m, which means -5 is our slope.


The slope of y = -5x is -5.
3 0
3 years ago
The following are the ages (years) of 5 people in a room:
skelet666 [1.2K]

Answer:

58

Step-by-step explanation:

the mean is adding up all the numbers, then dividing by the amount of the numbers.

add up all the numbers:

13 + 13 + 14 + 18 + 22 = 80

the mean is 23.

so you need to back track:

23 * 6 = 138

138 - 80 = 58

6 0
3 years ago
Other questions:
  • Find the 20th term of the sequence 2, 8, 18, 32, ... ​
    11·1 answer
  • What is 4.583.269 rounded to the nearest hundredth
    15·1 answer
  • Write an equation of a line that goes through the point (1,-5) and is perpendicular to the equation 8y=1x+16
    8·1 answer
  • 15 Points
    7·1 answer
  • What are rational numbers?
    5·2 answers
  • All of fifth grade is taking a field trip to the math museum. There are 11 classes in total. Nine classes have 29 students each.
    7·1 answer
  • Make a box-and-whisker plot for the data. What is the lower quartile value? 56,32,48,52,51,53,48,38,35,42,40,46,54,50
    15·1 answer
  • Equivalent expression to y.48
    8·1 answer
  • Quadrilateral qrst is a square what is pst
    5·1 answer
  • Plz help me<br><br> dang gosh plz help me thank you and have a nice day lol
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!