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
vredina [299]
3 years ago
14

NEED HELP ASAP!!!!!!!!!!!

Mathematics
2 answers:
liubo4ka [24]3 years ago
5 0

Answer:

B

Step-by-step explanation:

I took the test on E2020.

zhenek [66]3 years ago
4 0

The equation  x=tan^{-1}(\frac{12}{5}) can be used to find the measure of ∠BAC ⇒ 2nd answer

Step-by-step explanation:

Let us revise the trigonometry ratios in the right triangle ABC, where B is the right angle, AC is the hypotenuse, AB and BC are the legs of the triangle

The trigonometry ratios of the ∠BAC, the opposite side to this angle is BC and the adjacent side to it is AB are

  • sin(BAC)=\frac{opposite}{hypotenuse}=\frac{BC}{AC}
  • cos(BAC)=\frac{adjacent}{hypotenuse}=\frac{AB}{AC}
  • tan(BAC)=\frac{opposite}{adjacent}=\frac{BC}{AB}

In Δ ABC

∵ ∠ BCA is a right angle

∴ The hypotenuse is AB

∵ The adjacent side to ∠CAB is AC

∵ The opposite side to ∠CAB is BC

∵ AB = 13 units ⇒ hypotenuse

∵ CB = 12 units ⇒ opposite

∵ AC = 5 units ⇒ adjacent

- Let us find the trigonometry ratios of angle BAC

∵ m∠CAB is x

∵ sin(x)=\frac{BC}{AB}

∴ sin(x)=\frac{12}{13}

∴ x=sin^{-1}(\frac{12}{13})

∵ cos(x)=\frac{AC}{AB}

∴ cos(x)=\frac{5}{13}

∴ x=cos^{-1}(\frac{5}{13})

∵ tan(x)=\frac{BC}{AC}

∴ tan(x)=\frac{12}{5}

∴ x=tan^{-1}(\frac{12}{5})

The equation  x=tan^{-1}(\frac{12}{5}) can be used to find the measure of ∠BAC

Learn more:

You can learn more about the trigonometry ratios in brainly.com/question/4924817

#LearnwithBrainly

You might be interested in
I need help with this question please
Elza [17]

The changes in Z would be = 6.1× 10^-4.

<h3>Calculation of the unknown value</h3>

Z = Sin (x³ +y³)

Where X = 0.3

y = 0.2

Z= Sin ( 0.3³ + 0.2³)

Z= Sin ( 0.027 + 0.008)

Z= Sin ( 0.035)

Z= 6.1× 10^-4

Therefore, the changes in Z would be = 6.1× 10^-4.

Learn more about multiplication here:

brainly.com/question/10873737

#SPJ1

5 0
1 year ago
How do I find out the measure of the angles?
-Dominant- [34]
Use a protractor. Place the whole on the dot of the angle and you should know how to do the rest.
5 0
3 years ago
I need the smaller and larger angle
SSSSS [86.1K]

Answer:

x=11

Step-by-step explanation:

(4x)+(3x+13)=90                

if you look at the beam, it includes a 90 degree angle.

7x+13=90

distributive property

7x=77

subtracted both sides by 13

x=11

divided both sides by 7 to isolate x

4(11)         3(11)+13

44             33+13

                36

4(x) is the larger angle

6 0
2 years ago
Why do some numerical expressions contain parentheses
Elden [556K]

The most basic and common reason to use parentheses, brackets, and braces is to control the order of operations.

<h3>What are parentheses?</h3>

In mathematics, parenthesis is used to arrange numbers in the sequence of operations, clarify numbers, and denote multiplication.

Suppose you have an expression as:-

E = { ( 5-2 )8} 6

In this case, you would calculate 5 minus 2 first (parentheses), then multiply by 8 (brackets), then complete the part inside the curly braces, and finally multiply by 6.

Therefore the most basic and common reason to use parentheses, brackets, and braces is to control the order of operations.

To know more about parentheses follow

brainly.com/question/1778745

#SPJ1

6 0
2 years ago
A group of 8 students was asked, "How many hours did you watch television last week?" Here are their responses:
Ulleksa [173]

Answer:

Median= 14

Mean= 90

Step-by-step explanation:

Median:

Put the numbers in order,

4, 7, 9, 14, 16, 19, 20 Then after that you find the number exactly in the middle. That number ends up to be 14.

Mean:

Add up all of the numbers and then round it to the nearest tenth: 90

Median= 14

Mean= 90

5 0
2 years ago
Other questions:
  • Identify the 12th term of a geometric sequence where a1 = 8 and a6 = –8,192.
    6·2 answers
  • X2 −2x + y2 − 6y = 26 what is the radius
    7·1 answer
  • Find the remaining sides and angles. Round your answers to the nearest tenth. Show your work.
    15·1 answer
  • What is the value of t in the following equation? t + 14 = 2 712
    12·1 answer
  • What does the inequality x + 3 ≤ 2 say? A number and three is at most two. A number and three is less than two. A number and thr
    5·2 answers
  • mr delgado has some young orange trees. he wants to plant them in 46 rows. if t is the total number of orange trees, write an al
    5·2 answers
  • Please help I need the answer ASAP!!
    8·2 answers
  • Which function of x has a y-intercept of -3?
    11·1 answer
  • Add 37 +31 by counting in tens​
    14·2 answers
  • a jogger begins her workout by jogging to a park, a distance of 12 miles. she then jogs home at the same speed, but along a diff
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!