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
nikklg [1K]
3 years ago
14

Trig. help. How does

29%20%3D%20sinx" id="TexFormula1" title="2sin (\frac{1}{2} x)cos( \frac{1}{2} x) = sinx" alt="2sin (\frac{1}{2} x)cos( \frac{1}{2} x) = sinx" align="absmiddle" class="latex-formula"> ?
Mathematics
1 answer:
kotegsom [21]3 years ago
5 0
Recall that 2sin(x) cos(x) is actually equal to sin(2x).

We can prove this by expanding sin(2x) to sin(x + x).
sin(x + x) = sin(x) cos(x) + cos(x) sin(x) = 2sinxcosx

Thus, 2sin(x/2)cos(x/2) can be rewritten in the form:
sin(2x/2), and this simplifies down to sinx.
You might be interested in
The image shows the energy that can be generated from the Earth's water and the pull of the Moon's gravity.
tester [92]

Answer:

It is tidal energy, which is a renewable resource

Step-by-step explanation:

Tidal energy is is the energy produced when interaction of earth water masses and Moon's gravitational pull takes place. when moon's gravitational pull occurs on ocean water, currents and motion is produced in ocean water which leads to rise in water. when earth rotates this rise in water meets the shallow region of water near the shore and hence tide is created. This motion of  rise and fall of water stores energy which is called tidal energy.

Renewal source is one which does not gets depleted and is replenished by nature. It's quantity will not get reduced with consumption.

example is sunlight : sunlight is renewable energy as everyday day this energy is produced . no matter how much it is consumed on earth for a day. Next day it will be again produced by earth.

Since, tides are regularly occurring phenomenon hence they are source of renewable tidal energy produced by them

7 0
3 years ago
Line segment TS is tangent to circle O at point N.
Natalka [10]

Answer:

the answer is 148

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
3
solong [7]

Answer:0.2 gallons and 1.6 pints

Step-by-step explanation:

1 gallon = 8 pint

1 gallon / 5=0.2 gallon

8 pint / 5=1.6 pint

6 0
1 year ago
there are 32 ears of corn for 15 people. How many ears of corn can each person eat? Will there be any leftover ears of corn?
Kryger [21]

Each person can eat 2 ears of corn because 32/15=2.13333333. So there will be 2 ears of corn left over!!

3 0
3 years ago
Read 2 more answers
Select the best possible first step to solving the system by first eliminating the x variable.
zheka24 [161]
It seems to be none of the above
3 0
3 years ago
Other questions:
  • Sherry bought 6 apples at 43¢ per apple. She then bought 4 oranges at 51¢ per orange. How much was her grocery bill?
    12·2 answers
  • In the table, x represents the age in years of a collectible baseball card, and y represents its value in dollars.
    15·1 answer
  • Simplify <br> (3xˆ5-2)ˆ1/2
    12·1 answer
  • Jimmy invests $4,000 in an account that pays 2% annual interest, compounded semi-annually. What is his balance, to the nearest c
    9·1 answer
  • A square raised-bed garden takes up 57.8 square feet of Ricardo’s back yard. Which of the following is closest to the length of
    6·1 answer
  • Write your answer in simplest form.<br> -2/3+7/9
    15·1 answer
  • PLS HELP ILL MARK BRAINLIEST THANK U
    10·2 answers
  • Determine the total surface area of the prism with the net shown.
    8·1 answer
  • How do you solve this proof?
    10·1 answer
  • Please what's -9/13 + -6/13
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!