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
Vikki [24]
3 years ago
7

Which of the following are identities? Check all that apply

Mathematics
2 answers:
Natasha2012 [34]3 years ago
7 0

Answer:

A, C

Step-by-step explanation:

Actually, those questions require us to develop those equations to derive into trigonometrical equations so that we can unveil them or not. Doing it only two alternatives, the other ones will not result in Trigonometrical Identities.

Examining

A) True

\frac{1-tan^{2}x}{2tanx} =\frac{1}{tan2x} \\ \frac{1-tan^{2}x}{2tanx} =\frac{1}{\frac{2tanx}{1-tan^{2}x}}\\ tan2x=\frac{1-tan^{2}x}{2tanx}

Double angle tan2\alpha =\frac{1 -tan^{2}\alpha }{2tan\alpha}

B) False,

No further development towards a Trig Identity

C) True

Double Angle Sine Formula sin2\alpha =2sin\alpha *cos\alpha

sin(8x)=2sin(4x)cos(4x)\\2sin(4x)cos(4x)=2sin(4x)cos(4x)

D) False No further development towards a Trig Identity

[sin(x)-cos(x)]^{2} =1+sin(2x)\\ sin^{2} (x)-2sin(x)cos(x)+cos^{2}x=1+2sinxcosx\\ \\sin^{2} (x)+cos^{2}x=1+4sin(x)cos(x)

Tresset [83]3 years ago
6 0

Answer:

A, B, and C are all correct. APEX

Step-by-step explanation:

You might be interested in
If f( x )3 X + 4 and g(x)= X + 1 find the value of x given that F - 1g( x) = 2​
4vir4ik [10]

Answer:

The answer for the question is -1.5

4 0
2 years ago
Write an expression that represent the following. Add the sum by 5. Next, add 15 to that product,then triple the results.
Irina-Kira [14]
5+15=20
20x3=60

I'm probably wrong, but thats how I understood the question.
5 0
3 years ago
Jill, Meg and Beth are sister's. Jill is 2 years younger than Meg. Beth is half as old as Meg. Let m represent Meg's age. Write
pshichka [43]

Answer:

Two other algebraic expressions based on this situation are:

J = m-2

B = \frac{m}{2}

Step-by-step explanation:

Let m represent Meg's age.

Jill is 2 years younger than Meg.

Let J represents Jill's age

Jill's age J = m-2

Beth is half as old as Meg

Let B represents Beth's age

Beth's ageB = \frac{m}{2}

So,  two other algebraic expressions based on this situation are:

J = m-2

B = \frac{m}{2}

4 0
3 years ago
A timer is started and a few moments later a swimmer dives into the water and then comes back up. The swimmer’s depth (in feet)
zhannawk [14.2K]

Answer: The swimmer dives into the water 5 seconds after the timer is started.

The swimmer comes back up 11 seconds after the timer is started.

Step-by-step explanation:

6 0
2 years ago
A school district signs a contract to purchase 50 of the electric typewriters (normally selling for $129.95) from ABC at a quant
zaharov [31]

The price the school district pays for each typewriter is $106.56.

<h3>What is the price for each typewriter?</h3>

A quantity discount is the discount given for bulk purchases. It reduces the purchase price of a good or service.

Total purchase price of the typewriters before the discount = (50 x 129.95) = 6,497.50

Total purchase price of the typewriters after the discount = (100 - 18) x 6,497.50

= $5,327.95

Purchase price of one typewriter = $5,327.95 / 50 = $106.56

To learn more about how to calculate discounts, please check: brainly.com/question/26061308

5 0
2 years ago
Other questions:
  • Solve. (6x^3-1x^2)/(2x+1)
    12·2 answers
  • Find the measure of each interior angle for a regular triangle. round to the nearest tenth if nessessary
    11·1 answer
  • 5ry-c=q solve for r​
    11·1 answer
  • Describe the pattern below then find the next two numbers 547 54.7 5.47 0.547
    5·2 answers
  • Triangle LMN is a right triangle. true or false
    10·2 answers
  • Determine whether the lines are parallel. Use slope to explain your answer. Use the graph shown below
    5·2 answers
  • I just need to know if I add, subtract, divide, or multiply, I think I divide but not sure
    12·1 answer
  • 2. (-9 + 12) - (-7) ​
    8·2 answers
  • 30 points for anyone who can help me with the correct answer!
    12·1 answer
  • HELP ME PLS I will mark brainiest if i can!<br> qr + r; use q = 3, and r = -6
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!