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
gayaneshka [121]
3 years ago
11

Evaluate the expression without using a calculator Tan(arccos3/4)

Mathematics
1 answer:
julia-pushkina [17]3 years ago
6 0

9514 1404 393

Answer:

  (√7)/3

Step-by-step explanation:

The relationship between tangent and cosine is ...

  tan(α) = √(1/cos(α)² -1)

The cosine of the angle is given as 3/4, so the tangent is ...

  tan(arccos(3/4)) = √(1/(3/4)² -1) = √(16/9 -1) = √(7/9)

  tan(arccos(3/4)) = (√7)/3

You might be interested in
Write an en expression that could be used to find the amount Samantha earns working any number of months, m.
Elanso [62]

Answer:

<em>3m • 462.30 = 1,386.90</em>

<em />

Step-by-step explanation:

Let's use the example of 3 months. So, working one month Samantha earns $462.30. Let's say she works part-time for 3 months.

Multiply. 462.30 • 3 = $1,386.9

That means working 3 months, Samantha earns $1,386.90.

Then, just write it in standard form.

<em>3m • 462.30 = 1,386.90</em>

8 0
2 years ago
Read 2 more answers
Sam is measuring the velocity of a car at different times. After two hours, the velocity of the car was 50km/h. After six hours,
netineya [11]
You are given the time and speed so from there you can get the points (2,50) and (6,54) once you got that you can see how the slope is 1 and 
b=48
x-y=-48 (standard form)
 
part B= 
1    49
2    50
3    51
4    52
5    53
6    54
7    55
3 0
3 years ago
Ana’s statistics skills have been improving during her senior year at Fletcher High School. On her first end-of-the-week assessm
mafiozo [28]
A 1 = 57,  a 2 = 61,  a 3 = 65 ( arithmetic sequence )
a n = a 1 + ( n - 1 ) d
a 2 = a 1 + d
61 = 57 + d
d = 61 - 57
d = 4
a 9 = 57 + 8 * 4 = 57 + 36 = 93
Answer: Her score on the 9th assessment will be 93 points.


4 0
3 years ago
After 2 week he has used 8 1/2 cups of dog food after 5 week he has used 21 1/4 cups construct a function in the form y =mx+ to
gladu [14]

Answer:

<em> y = 4.25x</em>

Step-by-step explanation:

Given that:

After 2 week he has used 8 1/2 cups of dog food after 5 week he has used 21 1/4 cups, we can write this in coordinate form (x, y) where;

y is the amount of dog food

x is the time in weeks

The coordinates are (2, 8 1/2) and (5, 21 1/4)

get the slope m:

m = y2-y1/x2-x1

m = (21 1/4 - 8 1/2)/5-2

m = (85/4-17/2)/3

m = (85-34/4)/3

m = 51/12

m = 4.25

Get the intercept c:

Substitute any of the points say (2, 17/2) and m = 51/12 into the equation

y = mx+c

17/2 = 51/12(2) + c

17/2 = 51/6 + c

c = 17/2 - 51/6

c = 51-51/6

c = 0

Get the required equation:

substitute m - 4.25 and c = 0 into y = mx+c

y = 4.25x + 0

<em>Hence the required equation is y = 4.25x</em>

<em></em>

8 0
3 years ago
Line segment BD is a diameter of circle E. What is the measure of arc ?
DIA [1.3K]

Answer:

78

Step-by-step explanation:

Ed2020

6 0
3 years ago
Read 2 more answers
Other questions:
  • A Bus uses 4.5 gallons of gasoline to travel 75 miles. How many gallons would the bus use to travel 90 miles?
    7·1 answer
  • Simplify $\frac{x^2+2x^4+3x^6+...+1005x^{2010}}{2x+4x^3+6x^5+...+2010x^{2009}}$.
    6·2 answers
  • Ashley and Beth drove from city A to city B in exactly 5 hours, not taking rest stops. Ashley drove up to the area located halfw
    5·1 answer
  • A truck rental company charges $25 per day plus $.32 per mile. If you paid $265, how many miles did you drive?
    14·1 answer
  • What is the maximum water the pool holds?
    15·1 answer
  • 1. Multiply 4(x3 - 2x + 4)
    10·1 answer
  • Carlos had 24 classes play tickets to sell. He sold 3/4 of the tickets. How many tickets did Carlos sell?
    13·2 answers
  • as shown, several parallelograms are formed in an expandable gate. The angles of the parallelograms change as the gate is expand
    5·1 answer
  • Evaluate<br> 1<br> ÷<br> 3<br> 10<br> Give your answer as an improper fraction.
    13·1 answer
  • Eugene's grandmother is teaching him how to make her salsa recipe. Each batch of salsa requires 1
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!