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
Assoli18 [71]
2 years ago
9

Prove: cos(3x)=sin(2x)

Mathematics
1 answer:
Vesnalui [34]2 years ago
7 0

Answer:

Step-by-step explanation:

Step-by-step explanation:

By taking ( x = 18°)

<u>L.H.S</u>

cos(3x)=sin(2x)

cos(3x) = cos( 3X18°)= cos (54°)

            = cos[ 90° - (2x18°)]           ∵[  90°- (2x18°) = 54°]

            = ∴ sin ( 2x18°)

      As (x = 18°)

            = sin (2x) = R.H.S

You might be interested in
Solve for x in simplest form 15 = 1/3(x+9)
Lorico [155]

Heya!

Your question states: Solve for x in simplest form 15 = 1/3(x+9)

Answer: X = 36

<em>Numerical Explanation:</em>

1. Step by step

   I. 15 = 1/3(x+9)

2. Simplify both sides of the equation:

    II. 15 = 1/3x + 3

3. Flip the equation:

      III. 1/3x + 3 = 15

4. Subtract 3 from both sides:

          IV. 1/3 x +3 = 15

                          -3    -3

5.  Multiply both sides by 3:

              V.  3 * (1/3 x) = (3) * (12)

6. Final answer:

                  VI. x = 36


I Hoped I Helped!


~KINGJUPITER

         


6 0
3 years ago
Read 2 more answers
Given the equation 8x=4Y +16 ,generate a plan to rewrite it in slope-intercept form WHICH VARIABLE DO YOU SOLVE FOR?
andriy [413]

Answer:

you switch 8x and 4y by subtracting 8x to 4y + 16 and substracting 4y to 8x.

This gives you the equation -4y = -8x+16

Then you divide each side by -4

To give you your slope-intercept form which is y = 2x-4.

4 0
2 years ago
Joe makes $13.35 an hour. If Joe works 40 hours in one week, how much would he earn for the week?
Lelechka [254]

Answer:

534

Step-by-step explanation:

multiply 13.45 by 40 and you will get 534

6 0
3 years ago
Delana also bought 3 bags of pencils with 12 pencils in each bag.When the party began, she found that 13 of the pencils were bro
Ymorist [56]

Answer:

20

Step-by-step explanation:

3*12=36-13=20

5 0
2 years ago
Please help me with this math question
Svetach [21]
If the two rectangles are similar, their sides must be proportional. We can figure this out by setting up a proportion. We need to make sure to match up the correct sides though. We know the two longer sides must match up, so 6 goes with 60, and 3 goes with 30:

3/6=30/60

If we reduce the fractions, we get:

1/2=1/2

Therefore, the rectangles are similar. One of them is just rotated.
4 0
3 years ago
Other questions:
  • 7.6g of sugar is needed for every cake made. How much sugar is needed for 10 cakes?
    9·1 answer
  • HIGH POINTS!!!
    7·1 answer
  • Write the number equal to 5 tens and 13 ones
    5·1 answer
  • Is 4/10 bigger than 4/100
    8·2 answers
  • The cost y in dollars of car rental is related to the number to the number of miles driven x and is approximated by the linear e
    14·1 answer
  • 3. Simplify. *<br> 5m3 + 2m– 7m3 – 8m
    11·1 answer
  • Choose the answer that BEST supports this claim:
    5·2 answers
  • Which expresses 2.7 billion in scientific notation
    15·2 answers
  • The weight of meteorite A is 6 times the weight of meteorite B. If the sum of their weights is 140 tons, find the weight of each
    14·1 answer
  • Every Thursday, Matt and Dave's Video Venture has “roll-the-dice" day. A customer may choose to roll two fair dice and rent a se
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!