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
Lady bird [3.3K]
3 years ago
10

In triangle abc, if A=120 degrees, a=8 and b=3, then angle B=

Mathematics
1 answer:
CaHeK987 [17]3 years ago
6 0

The angle of B is \angle B=19^{\circ}

Explanation:

It is given that \angle A=120^{\circ} and a=8, b=3

To determine the \angle B, let us use the law of sine formula.

Thus, we have,

\frac{Sin A}{a} =\frac{Sin B}{b}

Substituting the values in the formula, we have,

\frac{Sin 120}{8} =\frac{Sin B}{3}

Multiplying both sides by 3,we get,

\frac{3(0.866)}{8} ={Sin B}

Simplifying and dividing, we get,

0.32475=Sin B

Multiplying both sides by \sin ^{-1}, we get,

\sin ^{-1}(0.32475)=B

Thus, B=18.95^{\circ}=19^{\circ}

Hence, The angle of B is \angle B=19^{\circ}

You might be interested in
Help please <br><br> 9 2 7 <br> X = 12 x 12
Irina18 [472]

Answer:

x=12

Step-by-step explanation:

x^9=12^9

power of 9 cancel eachother at both sides of equation.

so

x=12

6 0
2 years ago
Which angles are alternate interior angles?
sesenic [268]

Answer:

<JIL and <MLI

Step-by-step explanation:

7 0
3 years ago
What is the product of (3x^-4)(2y^-4)?
kap26 [50]

Answer:

6xy^-4

Step-by-step explanation:

we use the property

a^1×b^1=(ab)^1

4 0
3 years ago
How do you multiply and then use distributive property?
morpeh [17]
It depends on the question given, for example

you can do distributive property will multiplying.

Example 1:

there is two ways on doing distributive property.

I can do 4(8+3)

add 8+3 since it is inside the parenthesis which equals = 11 then multiply the outside on what you added. 4x11= 44

example 2: I can also do it another way. 4(8+3) distribute the 4 by multiplying the 4 with both numbers. 4x8 and 4x3 which equals 32, and 12. add 32+12=44

so either way you will get the same answer. hope I helped.

6 0
3 years ago
2x + 21 = 5x. What is the first step in finding the value of x?
Vesna [10]

Answer:

x=7

Step-by-step explanation:

isolate the variables by dividing each side by factors that dont contain the variable x=7

4 0
3 years ago
Read 2 more answers
Other questions:
  • Whats 13/16,5/48/0.25,0.5 in order least to greatest?
    15·1 answer
  • Marita orders 12 yards of material to make banners. If she needs 1 foot of fabric for each banner, how many banners can she make
    12·2 answers
  • Write the equation of a line in point slope form that has a slope of -1/5 goes through the points (2, -7)
    11·1 answer
  • Yesterday Carson recycled 1 1/3 pounds of paper packaging. He also recycled 3/4 of a pound of plastic packaging. Combined, how m
    11·2 answers
  • Identify the surface with the given vector equation. r(s, t) = s sin 4t, s2, s cos 4t
    5·1 answer
  • Write a polynomial expression that represents the area of the trapezoid [a= 1/2h(b1+b2)]
    11·1 answer
  • A national news channel reported that there is no difference between the average earnings of women and men in computer and mathe
    12·1 answer
  • The graph represents the amount of time it takes an object
    7·1 answer
  • Three side lenghts of 5.2,6.3, and 10.5 units will form exactly one unique triangle​
    8·1 answer
  • A rocket is launched in the air. The graph below shows the height of the rocket hh in meters after tt seconds.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!