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
Tomtit [17]
3 years ago
7

Given the identity tanX=sinXcosX and the relationship between the sine and cosine of complementary angles, what is tan (90°− A)?

Mathematics
2 answers:
lana [24]3 years ago
8 0

Answer:

Step-by-step explanation:

Mumz [18]3 years ago
4 0
Note  tanx =    sinx / cosx.    What you typed is wrong.

For complementary Angles, that is Angles that add up to 90 degrees.
For example 60 and 30 are complementary. 20 and 70 are also complementary, same is 40 and 50. That is because they both add up to 90.

For Complementary Angles:

sinx  = cos(90 - x)
cosx  = sin(90 -x)
tanx    = cot(90 -x)
cotx    =  tan(90 -x).                              cotx =  1/tanx

Therefore tan(90-A) = cotA.
You might be interested in
Karen made 40 cakes
VLD [36.1K]
1. You have that Karen made 40 cakes and she gives 1/5 to Andrew and 10% to Chris, then you have:

 40 cakes=5/5=1
 1/5 to Andrew⇒40x1/5=8
 10% to Chris=40x0.10=4

 1/5----8 
    x----4 

 x=4(1/5)/8
 x=1/10

 2. The fraction of the 40 cakes that she have left is:

 1-1/5-1/10

 Therefore, the answer is: 7/10
3 0
3 years ago
You were billed $28.50 for additional data usage on your cell phone at a rate of $9 per gigabyte. Three choices are correct ways
Zepler [3.9K]

Answer:

b.) 9/g = 28.5

Step-by-step explanation:

a.) 9g = 28.5

b.) 9/g = 28.5

c.) 28.5 = 9 x g

d.) 28.5/9 = g

Total billing = $28.50

Rate = $9 per gigabyte

Calculate the additional gigabytes, g, that you used.

Additional gigabyte used, g = Total billing / Rate

g = $28.50 / $9

9g = 28.50

28.50 = 9 × g

g = 28.50 / 9

Option b.) 9/g = 28.5 is the incorrect way to calculate the additional gigabytes, g, that you used.

4 0
2 years ago
At the time of liquidation, Fairchild Company reported assets of $200,000, liabilities of $120,000, common stock of $90,000 and
larisa [96]

Answer:

c) $90.000

Step-by-step explanation:

common stock is easy to sell, but is not real money at the time of liquidation.

Assets are count as  money , but  is necessary to pay de debts, (liabilities).

At the time of liquidation, $200.000 (assets) -$120.000 (liabilities) = $80.000

+ Retained earnings ($10.000) = $90.000 .

7 0
3 years ago
Evaluate the function rule for the given value f(x)=15x for x=3
lesya692 [45]

Answer:

f(3) = 45

Step-by-step explanation:

Substitute x = 3 into f(x) and evaluate

f(3) = 15 × 3 = 45

7 0
3 years ago
Read 2 more answers
In the standard (x,y) coordinate plane a right triangle has vertices at (-3,4)(3,4)(3,-4) what is the length in coordinates unit
MAXImum [283]

Given:

The vertices of a right triangle are:

(-3,4),(3,4),(3,-4)

To find:

The length of the hypotenuse of the given right triangle.

Solution:

Let the vertices of the right triangle are A(-3,4),B(3,4),C(3,-4).

The distance formula is:

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Using distance formula, we get

AB=\sqrt{(3-(-3))^2+(4-4)^2}

AB=\sqrt{(3+3)^2+(0)^2}

AB=\sqrt{(6)^2+0}

AB=\sqrt{36}

AB=6

Similarly,

BC=\sqrt{(3-3)^2+(-4-4)^2}

BC=\sqrt{(0)^2+(-8)^2}

BC=\sqrt{64}

BC=8

And,

AC=\sqrt{(3-(-3))^2+(-4-4)^2}

AC=\sqrt{(6)^2+(-8)^2}

AC=\sqrt{36+64}

AC=\sqrt{100}

AC=10

Now, taking sum of squares of two smaller sides, we get

AB^2+BC^2=6^2+8^2

AB^2+BC^2=36+64

AB^2+BC^2=100

AB^2+BC^2=AC^2

By the definition of the Pythagoras theorem, AC is the hypotenuse of the given triangle.

Therefore, the length of the hypotenuse is 10 units.

6 0
3 years ago
Other questions:
  • Graph the hyperbola with equation (x+1)^2/9-(y-4)^2/25= 1
    13·1 answer
  • True or false: The vertical line test may be used to determine whether a relation is a function.
    15·2 answers
  • What is that simplified? Algebra 2
    12·1 answer
  • How far is the cruise ship????PLEASE HELP!!!!
    13·1 answer
  • Show your work please !
    9·2 answers
  • Who was a zoom meeting pls send me code and pass
    9·2 answers
  • Dominic is asking his relatives and friends to contribute $2 each to the school library fund. So far he has collected donations
    15·1 answer
  • A rectangle made of square tiles measures 8 tiles wide and 10 tiles long. What is the length of a similar rectangle 12 tiles wid
    9·1 answer
  • What’s the rangeee??
    13·1 answer
  • Express in the form n:1 Give n as a decimal 3:15
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!