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
givi [52]
3 years ago
9

I need help with this ion understand it

Mathematics
1 answer:
brilliants [131]3 years ago
6 0

Answer:

c. 30

Step-by-step explanation:

Reference angle = /theta = ?

Hypotenuse = 23

Adjacent side = 20

Thus, applying CAH:

Cos(/theta) = \frac{adj}{hyp}

Cos(/theta) = \frac{20}{23}

/theta = cos^{-1}(\frac{20}{23})

/theta = 29.5918458 ≈ 30° (nearest degree)

You might be interested in
if one angle of parallelogram is four times greater than the othe. find of a parallelogram? *Short ans please*​
enyata [817]

Answer:

144°, 144°, 36°, 36°.

Step-by-step explanation:

Take shorter angle = x

Then the bigger angle = 4x (4 times the other angle)

In a parallelogram, there are 4 angles. Also, in a parallelogram opposite angles are equal to each other.

So,

1 angle = x

2 angle = 4x

3 angle = x

4 angle = 4x

The sum of all 4 angles in a parallelogram = 360°. So,

4x + x + 4x + x = 360°

10x = 360°

x = 360/10

x° = 36°

4x = 36 × 4 = 144°

Angles in the parallelogram = 144°, 144°, 36°, 36°.

Hope it helps ⚜

7 0
2 years ago
Read 2 more answers
CAN SOMEONE HELP ME :)​
Crank

Answer:

ĐÉO OKF

Step-by-step explanation:

5 0
3 years ago
From the sum of 3a^2-ab-2b^2 and 2a^2+5ab-3b^2 subtract a^2-3ab-4b^2
Luden [163]

4a^2+7ab-b^2

Step-by-step explanation:

Add the first two equations together:

 3a^2-ab-2b^2

+ 2a^2+5ab-3b^2

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

5a^2+4ab-5b^2

Subtract that answer from the remaining trinomial:

5a^2+4ab-5b^2

- a^2-3ab-4b^2

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

4a^2+7ab-b^2

3 0
3 years ago
Read 2 more answers
Which expressions are equivalent
PolarNik [594]

Answer:

Options (B) and (C)

Step-by-step explanation:

The given expression is (d^{\frac{1}{8}})^5

By simplifying this expression,

(d^{\frac{1}{8}})^5

= (\sqrt[8]{d})^{5}

Option (B)

Similarly,

(d^{\frac{1}{8}})^5

= d^{\frac{5}{8}}

= (d^{5})^{\frac{1}{8}}

Option (C)

Therefore, Options (B) and (C) will be the correct options.

5 0
3 years ago
The expression 2x(5x - 1) +(3x2 - 7x - 2) is simplified into the form ax 2+ bx + c.
Yanka [14]

Step-by-step explanation:

2x (5x - 1) + (3x^2 - 7x - 2)

= 10x^2 - 2x + 3x^2 - 7x - 2

= 13x^2 - 9x - 2

a = 13

b = -9

c = 2

7 0
4 years ago
Other questions:
  • Fill in the missing angle measures
    13·2 answers
  • Calculate the area of the following rectangle if a= 11.9 and b= 6.6
    6·1 answer
  • Determine specifications for the fill volume that are symmetric about the mean and include the middle 99% of all cans?
    15·1 answer
  • Evaluate each expression. (1/3)^4
    9·1 answer
  • Draw a diagram to match the equation 2(​w​ + 44) = 180. Then find the value of ​w​.
    12·1 answer
  • Suppose that a box contains 25 light bulbs, of which 20 are good and the other 5 are defective. Consider randomly selecting thre
    5·1 answer
  • Pls help me guys! This is super hard
    13·1 answer
  • One of the solutions to x^2– 2x – 15 = 0 is x = -3. What is the other solution?
    7·1 answer
  • Question is in the photo
    14·2 answers
  • Rewrite in simplest terms: (4x + 4) - (-4x - 9)<br> Answer:<br> Submit Answer
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!