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
steposvetlana [31]
3 years ago
12

3d trigenomatry , need help , with step by step working please

Mathematics
1 answer:
Law Incorporation [45]3 years ago
4 0

The angle you want - call it <em>θ</em> - is such that

tan(<em>θ</em>) = FC / AC

Find the length of the diagonal AC, i.e. a diagonal of the rectangle ABCD. ABC forms a right triangle with legs AB = 70 and BC = 50, so

AC² = AB² + BC²

→   AC = √(70² + 50²) = 10 √74

Find FC using the given angle of the sloping face:

tan(30º) = FC / BC

→   1/√3 = FC / 50

→   FC = 50/√3

Now solve for <em>θ</em> :

tan(<em>θ</em>) = (50/√3) / (10 √74)

→   tan(<em>θ</em>) = 5/√222

→   <em>θ</em> ≈ 18.6º

You might be interested in
If the orginal quantity is 15 and the new quantity is 19 estimate the percent change of which of these is the best esitmate for
snow_tiger [21]

Answer:

The awnser should be 5% increase or D

Step-by-step explanation:

This should be the awnser because we know that 15 to 19 is a increase. And next 25% increase is way too much, so 5% should be it.

7 0
3 years ago
Read 2 more answers
2(1 – x) &gt; 2x HELP ASAP!!! I CANT FIGURE THIS OUT
katrin [286]
<h3>Answer:  x < 1/2</h3>

This is the same as saying x < 0.5 since 1/2 = 0.5

====================================================

Work Shown:

2(1-x) > 2x

2*1 + 2*(-x) > 2x ..... distribute

2 - 2x > 2x

2 > 2x+2x .... adding 2x to both sides

2 > 4x

4x < 2 ..... flip both sides; flip the inequality sign

x < 2/4 ..... dividing both sides by 4; see note below

x < 1/2

Note: We do not flip the inequality sign here because we are dividing both sides by a positive value. The inequality sign would only flip if you divide both sides by a negative number.

4 0
3 years ago
The 12 boys in the class make up 15% of the class. What is the total number of students in the class?
alina1380 [7]

Answer:

80 students

Step-by-step explanation:

12/80 is 0.15 or 15%

5 0
2 years ago
A 35 mm length of cable is cut into pieces that measure 1.25 meters each. Into how many pieces is the cable cut
AysviL [449]
HE'LL HAVE MORE THAN ENOUGH
8 0
4 years ago
Does anybody <br> know the answer
nordsb [41]

1. Part 14/25
Total .56
Percent56%
2. 16/20
Total. .8
Percent 80%
3. 11/20 55%
4. 40
5. 300%
6. 140
4 0
3 years ago
Read 2 more answers
Other questions:
  • Can you please help me with my algebra?
    13·1 answer
  • -5/7*1/6<br><br>What's the answer?
    5·2 answers
  • SOMEONE PLEASE HELLP...I’ll return the help!!and help u
    12·1 answer
  • Simplify: 2 (x-6) + 8x<br><br> when x = 3
    9·1 answer
  • Someone help it’s due in some time
    9·2 answers
  • What is the equation of the line that passes through the point 7,-3 and has a slope of -5
    8·2 answers
  • Alejandra drove from Michigan to Colorado to visit her friend. The speed limit on the highway is 70 miles/hour. If Alejandra's c
    9·1 answer
  • GUYS HELP please!!!
    15·2 answers
  • What are the opposites of 9, −2.7, 3.35, and 6
    15·1 answer
  • 1. Find the value of x.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!