Answer:
(B)c = StartFraction (3) sine (45 degrees) Over sine (40 degrees) EndFraction

Step-by-step explanation:
In Triangle ABC is shown.
95 degrees
45 degrees.
|AB|=c
|BC|=3.0 cm

Using the Law of Sines


The correct option is B.
Answer:
A and B
Step-by-step explanation:
A) Collect like terms
0=0
B) Collect like terms
0=0
A and B both correct
Answer:

Step-by-step explanation:
<em>Angle sum property of triangle states that the sum of interior angles of a triangle is 180°</em>
So,

-4 x 9 - (-10)
= - 45 + 10
= - (45 - 10)
= - 35
Rule: Negative times positive is negative; Negative times negative is positive