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
jolli1 [7]
3 years ago
11

Where does the pythagorean identity sin^2 + cos^2=1 come from? How does it relate to right triangles?

Mathematics
1 answer:
Arada [10]3 years ago
8 0
Consider a<span> right triangle with </span><span>hypotenuse of 1.
sin x means to divide the side in front of the angle by </span>hypotenuse<span>
cos x means to divide the side beside  the angle by hypotenuse
we know that a^2+b^2=c^2 now divide two sides by c^2
\frac{ a^{2} }{ c^{2} }+  \frac{ b^{2} }{ c^{2} }=1
c is 1 also a/c means sinx and b/c is cos x so
sin^2(x)+cos^2(x)=1

</span>



You might be interested in
Math question down below
Flauer [41]
Average change in altitude per minute
216.12÷2.4
=90.05m
7 0
3 years ago
Read 2 more answers
Find the volume<br> 12 poir<br> 2.2 cm
Tanzania [10]
Answer: 26.4
To find the volume u multiply 12x2.2=26.4
6 0
3 years ago
HURRY ILL PICK BRAINLIEST!!!!!!!
telo118 [61]
<span>30x + 30y = 450 20x + 25y = 345

Here 345 represents the total area (in sq ft) shoveled; x repres. Melinda's rate and y represents Paul's rate.  We need to solve for x and y and then subtract the smaller from the larger.

</span>30x + 30y = 450   Multiply this eqn by 2:      6<span>0x + 60y = 900
</span>20x + 25y = 345   Mult this eqn by -3:          -60x -75y  = -1035
                                                                    ---------------------------
                                                                              -15y  = -135
                                                                                    y = 9

This comes to 9 square feet per minute.
Now, let's find x:    30x + 30y = 450; 30x + 270 = 450; 30x = 180; x = 6

Melinda can shovel 6 sq ft in 1 min, whereas Paul can shovel 9.

The difference is (9 - 6) sq ft / min,     or     3 sq ft / min   (answer)
4 0
2 years ago
Read 2 more answers
How do you know (2,1) is a solution to 4x +y=9
VARVARA [1.3K]

4x+y=9

4(2)+(1)=9

8+1=9

9=9

It is a solution

8 0
3 years ago
Read 2 more answers
John and 2 friends are going out for pizza for lunch. They split one pizza and 3 large drinks. The pizza cost $12.00. They spend
Tatiana [17]

。☆✼★ ━━━━━━━━━━━━━━━  ☾

Subtract the cost of the pizza from the total:

16.95 - 12 = 4.95

Divide this value by 3:

4.95/3 = 1.65

1 large drink cost $1.65

Have A Nice Day ❤

Stay Brainly! ヅ

- Ally ✧

。☆✼★ ━━━━━━━━━━━━━━━━  ☾

3 0
3 years ago
Other questions:
  • Find A common denominator of 1/6 and 1/9. rewrite the pair of fractions using common denominator.
    13·1 answer
  • Simplify: square root 27x12 over 300x8
    9·1 answer
  • Do 3 questions for 12 points.
    6·1 answer
  • 21x-9 what is the answer
    8·1 answer
  • In each turn of a game you toss two coins. If 2 heads come up, you win 2 points and if 1 head comes up you win one point
    10·1 answer
  • The height of a box is 30 inches.<br><br> What is the height of the box in feet?
    9·2 answers
  • NO LINKS <br> Please help
    9·1 answer
  • Find the number of outcomes in the complement of the given event.
    15·1 answer
  • In the figure shown, MR = 45 units, and RQ = 15 units. What is the length of PR?
    10·1 answer
  • Use for questions 21-24: Out of 50 students, 24 are taking art and 30 are taking music. Sixteen of the
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!