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
lorasvet [3.4K]
3 years ago
15

What is equal to sin 30

Mathematics
2 answers:
Jet001 [13]3 years ago
7 0
From the unit circle sin 30 = sin pi/6 = 1/2.
riadik2000 [5.3K]3 years ago
6 0
The sine of any angle is equal to the cosine of the complementary angle.

Complementary angle means two angles whose total equal to 90 degrees.

The complementary angle for 30 degrees is 90 degrees - 30 degrees or 60 degrees.

So, sin(30) = cos(60).


You might be interested in
PLEASE HELP ME IM BEGGING I also need the work shown
attashe74 [19]

Answer:

Step-by-step explanation:

3 0
3 years ago
Lian needs to solve the quadratic equation: x^2 - 4x - 2 = 0. Which statement about how Lian should solve this equation is true?
Ulleksa [173]

Answer:

x = 4.45 or x = - 4.45

Step-by-step explanation:

Here are the steps:

Substitute the values,

4+\sqrt{-4^2-4(1*-2)} ÷ 2 × 1

x = 2 ± √6

x = 4.45 or x = - 4.45

<em>good luck, i hope this helps :)</em>

5 0
3 years ago
Read 2 more answers
0.2.0.4, 0.6, 0.8, 1....<br> Arithmetic or geometric
Basile [38]

Arithmetic sequences have a common difference between consecutive terms.

Geometric sequences have a common ratio between consecutive terms.

Let's compute the differences and ratios between consecutive terms:

Differences:

0.4-0.2 = 0.2,\quad 0.6-0.4=0.2,\quad 0.8-0.6=0.2,\quad 1-0.8=0.2

Ratios:

\dfrac{0.4}{0.2}=2,\quad \dfrac{0.6}{0.4} = 1.5,\quad \dfrac{0.8}{0.6} = 1.33\ldots, \quad\dfrac{1}{0.8}=1.25

So, as you can see, the differences between consecutive terms are constant, whereas ratios vary.

So, this is an arithmetic sequence.

3 0
3 years ago
What is 23-5 <br><img src="https://tex.z-dn.net/?f=18" id="TexFormula1" title="18" alt="18" align="absmiddle" class="latex-formu
zheka24 [161]
23 minus 5 equals 18
5 0
3 years ago
Read 2 more answers
The ratio of boys to girls in Ella’s grade is 3 to 4. The ratio of boys to girls in Minh’s grade is 4 to 5. Each grade has a tot
Aneli [31]

Answer:

In mih's school there are 100 boys

While in Ella's school there are 80 boys

Step-by-step explanation:

X*1/5=20

X=100

X*1/4=20

X=80

4 0
2 years ago
Other questions:
  • What is a flat plane postulate?
    6·1 answer
  • Which two equations represent the statement “48 is 6 times as many as 8”
    7·1 answer
  • If a new jacket sells for $46, find the total cost if you were charged 4% sales tax.
    8·1 answer
  • I need help please how do you solve 3( x - 1/3 ) = 52
    12·1 answer
  • 45 percent of a group of people have blue eyes. How many people are in the group if 180 people have blue eyes
    10·1 answer
  • IN YOUR OWN WORDS How is the cube root of a number different from<br> the square root of a number?
    8·1 answer
  • I will make u the BRAINLIEST pls answer this question and explain!!!!!!!
    14·1 answer
  • Brian spins a fair spinner numbered 1 - 5 and flips a fair coin.
    9·1 answer
  • Help please And can you include an explanation. The question is
    15·1 answer
  • Do the ratios 20:18 and 3:2 form a proportion?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!