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
alukav5142 [94]
3 years ago
12

Why did I get different answers to find x?

Mathematics
1 answer:
sineoko [7]3 years ago
5 0

\bf tan(39^o)=\cfrac{\stackrel{opposite}{x}}{\stackrel{adjacent}{8}}\implies 8\cdot tan(39^o)=x\implies 6.48\approx x \\\\[-0.35em] ~\dotfill\\\\ \cfrac{sin(39^o)}{x}=\cfrac{sin(51^o)}{8}\implies \cfrac{8\cdot sin(39^o)}{sin(51^o)}=x\implies 6.48\approx x

one thing to bear in mind is that calculators have two modes, Degree mode and Radian mode, if your calculator is in Radian mode and you plug in tan(39), it thinks "tangent of 39 radians" and so it gives that, bearing in mind that 1 radian is about 57°.

So make if you're using degrees as the angle, make sure your calculator is in Degree mode first, thus tan(39) will mean "tangent of 39 degrees".

\bf 8\cdot tan(39~rad) \approx 28.9~\hspace{10em} \cfrac{8\cdot sin(39~rad)}{sin(51~rad)}\approx 11.5

You might be interested in
I just need help with filling in the blanks please and thank you.
poizon [28]

Answer:1)vertice 2) interesecting

Step-by-step explanation:

4 0
3 years ago
Calculate the straight line distance between the points (-10, -7) and (-8,1).<br> G.2(B)
tia_tia [17]

Answer:

2√(17) or about 8.2462 units.

Step-by-step explanation:

We want to determine the distance between the two points (-10, -7) and (-8, 1).

We can use the distance formula. Recall that:

\displaystyle d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}

Substitute and evaluate:

\displaystyle \begin{aligned} d &= \sqrt{((-10)-(-8))^2 + ((-7) - (1))^2} \\ \\ &=\sqrt{(-2)^2+(-8)^2} \\ \\ &= \sqrt{(4) + (64)} \\ \\ &= \sqrt{68}\\ \\ &= 2\sqrt{17}\end{aligned}

Hence, the distance between (-10, -7) and (-8, 1) is 2√(17) units or about 8.2462 units.

4 0
2 years ago
-2 times 8 over 3 =?<br> Multiply
antoniya [11.8K]

answer: -5 \frac{1}{3}

work:

set up as fractions.

\frac{-2}{1}  x \frac{8}{3} =

multiply across to solve.

so, multiply -2 x 8 and 1 x 3.

you get \frac{-16}{3}

or, -5 \frac{1}{3}

<em>i hope this helps, and have a great day! don't hesitate to ask if you need more help with this specific question! ♥ - eviezoom </em>



8 0
3 years ago
Read 2 more answers
I need help with question 4
White raven [17]

Answer:

i cant see it take another picture plz

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Somebody, Anybody please help
taurus [48]
The answer should be 390=60s, assuming s is the number of shelves he would need.

By the way, if you want the answer using this formula:
390=60s
390/60=s
6.5=s
s=6.5
8 0
3 years ago
Read 2 more answers
Other questions:
  • What is another name for Angle 1? Line segments J L and L M combine to form an angle. Line segment L K comes out of the angle to
    5·2 answers
  • The sum of a rational number and an odd integer is a rational
    6·1 answer
  • If you start with a number divide it by 4 then multiply it by two you end up with 8 squared
    14·1 answer
  • For neighborhood parks of a given size, the equation yˆ=7.219x+2.033 models the number of children at a park, where x is the num
    5·2 answers
  • Financial planning does or does not require preparation
    9·1 answer
  •  K is the midpoint of . if = 3x + 1 and     , find the length of
    14·1 answer
  • penguins have more feathers than most other birds, about seventy-two feathers per square inch. How many feathers would a penguin
    12·2 answers
  • Solve for x and y by substitution method
    14·2 answers
  • What is the distance from -12 to 88?
    14·2 answers
  • (a)Find the greatest common factor (GCF) of 72 and 40.<br> (b)Use the GCF to factor 72 - 40.
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!