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
yanalaym [24]
3 years ago
6

3. Let sin 21 = 0.358. What is the value of x for cos x=0.358?

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
6 0

Answer:

\cos(69)

Step-by-step explanation:

We will use the co-function identity for sine, where:

\sin(x)=\cos(90-x)

Since sin(21)=0.358=cos(x). This means that:

21=90-x

Solve for x. Add x to both sides:

x+21=90

Subtract 21 from both sides:

x=69\textdegree

Hence:

\sin(21)=\cos(69)\approx0.358

You might be interested in
Solve −4(x + 10) − 6 = −3(x − 2). (1 point)
AURORKA [14]

Hey there!!

Given equation :

... -4 ( x + 10 ) - 6 = -3 ( x - 2 )

Using the distributive property :

... -4x - 40 - 6 = -3x + 6

Combining like terms :

... -4x - 46 = -3x + 6

Adding 46 on both sides :

... -4x = -3x + 52

Adding 3x on both sides :

... -x = 52

... x = -52

Hope helps!

8 0
3 years ago
Suppose f(x)=x^2+3 and g(x)=x-2 find (f-g)(x
SSSSS [86.1K]

Answer:

x^2-x+5

Step-by-step explanation:

(f-g)(x)=f(x)-g(x)

= (x^2 + 3) - (x - 2)   (Don’t forget the -1 multiplies to the x AND -2

= x^2 + 3 - x + 2

=x^2-x+5

6 0
4 years ago
Which of the following is a good way to quickly determine whether 3⁄12 and ¼ are equal? A. Inverse multiplication B. Reciprocal
IRINA_888 [86]

D. , this is a good way because this way you can easily multiply and then you'll see your answer right in front of you.


** This is an opinionated question so you don't have to listen to my answer but please rate my answer. Thanks!

4 0
3 years ago
Read 2 more answers
Perform the operation and write the answer in the simplest form....
Stels [109]
For dividing fractions you should always use the KCF method: Keep Change Flip
6/10 divided by 12/7 
Kcf method:
6/10*7/12= 42/120
42/120 in simplest form will be 7/20
So the answer is A

4 0
3 years ago
Read 2 more answers
If answer is correct I will mark as brainliest.
Serga [27]

Answer:

c

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • Consider the combined function. f(X) + g(X) = 9x + 4 . If f(x) = 4x - 3, find g(x)
    13·1 answer
  • Add an ADJECTIVE to improve the sentence. The ____air feel very humid
    9·2 answers
  • NEED HELP ASAP!!
    10·1 answer
  • Radioactive material disintegrates at a rate proportional to the amount currently present. If Q(t) is the amount present at time
    15·1 answer
  • If f(x) = 2 x + 14, then f(x)= 7 <br><br> HELP
    14·2 answers
  • Marina wants to buy a sound system that costs $540. The sales tax rate in her state is 8.25% how much sales tax must she pay?​
    9·1 answer
  • Summer vacation is 68 days long and 3/4 of the vacation has gone by. How many days are left? Explain!!
    9·2 answers
  • What are the x- and y- coordinates of point P on the directed line segment from K to J such that P is Three-fifths the length of
    8·1 answer
  • Can someone help me with this
    14·1 answer
  • I NEED HELP CANT GET THE ANSWER TRIED MORE THAN 5 TIMES
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!