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
Nata [24]
3 years ago
15

Use the unit circle to find sec (-90)

Mathematics
1 answer:
andreyandreev [35.5K]3 years ago
4 0

Using the unit circle, you can visualise the secant as follows:

  1. Draw the vertical line passing trough (1,0)
  2. Extend the radius until it meets this line at point P
  3. The length of OP is the secant of your angle.

Since -90 means that the radius points downwards, it means that the radius is vertical as well, and thus it never meets the vertical line through (1,0).

Thus, the secant is not defined at -90.

In fact, if we switch back to the function notation, we can confirm this claim, since we have

\sec(x)=\dfrac{1}{\cos(x)}\implies \sec(-90)=\dfrac{1}{\cos(-90)}=\dfrac{1}{0}

which is undefined.

You might be interested in
This package of cheese costs $2.97 (there are 11 slices of cheese)
torisob [31]

Answer:

$4.86

Step-by-step explanation:

2.97/11 =.27                 .27 x 18= 4.86

7 0
3 years ago
Read 2 more answers
The ratio of dogs to cats at an animal shelter is 3 to
Morgarella [4.7K]
20 dogs are at the shelter.
8 0
3 years ago
Which polynomials are in standard form?
Ksivusya [100]

b

b/c when it's rearranged large to small

4 0
3 years ago
HELP PLZ SUPER EZ HURRY Please some1 help me. jodi built a rectangular sandbox for her daughter. The sand measures 6 feet 5 feet
nexus9112 [7]

Answer:

To fill the sandbox, she would need 15 cubic feet.

Step-by-step explanation:

To find the volume of a box, multiply all of its dimensions together.

6ft * 5ft * 1/2ft = 15ft^3

So, since she bought 20 cubic feet of sand, she should have enough with 5 cubic feet left over.

7 0
3 years ago
Total brain fart! 24+5x=-x+6(5a-4)
kow [346]

Answer:

When solving for x, answer = \large\boxed{x = 5a - 8}

When solving for a, answer = \large\boxed{a = 1/5x + 8/5}

Step-by-step explanation:

24 + 5x = -x + 6(5a - 4)

Start by multiplying 6 by the values in the parenthesis

24 + 5x = -x + 30a - 24

Add 24 to both sides of the equation

48 + 5x = -x + 30a

Add 1x to both sides of the equation

48 + 6x = 30a

Subtract 48 from both sides of the equation

6x = 30a - 48

Divide both sides of the equation by 6

x = 5a - 8 (Answer when solving for x)

Add 8 to both sides of the equation

x + 8 = 5a

Divide both sides of the equation by 5

a = 1/5x + 8/5 (Answer when solving for a)

-----------------------------------------

When solving for x, answer = \large\boxed{x = 5a - 8}

When solving for a, answer = \large\boxed{a = 1/5x + 8/5}

Hope this helps :)

3 0
3 years ago
Other questions:
  • Solve the following inequality. 5x-3 &gt; 7<br> a. x &gt; 2<br> b. x &lt; 50<br> c. x &gt; 50
    7·1 answer
  • The hypotenuse of a 30°-60°-90° triangle measures 10 inches. Which could be the length of a leg of the triangle?​
    5·1 answer
  • Help me Asap please!!!
    8·1 answer
  • The area of a rectangular wall of a barn is 260 square feet. Its length is 6 feet longer than twice its width. Find the length a
    13·1 answer
  • Can anyone help me with 6. I don’t understand the question and I need an answer soon!
    14·1 answer
  • What is the exact area of a circle having diameter 7 in.?
    11·1 answer
  • A tire rim has a diameter of 15 in. What is the circumference of the tire rim? Use 3.14 for Pi.
    9·1 answer
  • Please answer soon!!!!
    15·1 answer
  • Write each equation in standard form using integers.
    12·1 answer
  • Solve this equation -4 + x = 9
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!