B. c = ((3)sin45°)/sin40°
Side a is given information: 3cm, and we can find angle A (which is the angle opposite side a) by subtracting the other two angles from 180 because the total interior angle measures of a triangle add to equal 180°.
Angle A = 180 - (95+45) = 40°.
This can be substituted into the equation for the law of sines.
sin(40)°/3 = sin(45)°/c
—Cross multiply
c•sin(40)° = 3•sin(45)°
—divide both sides by sin40 to get the variable c alone and we get:
c = (3)sin(45°)/sin(40°)
this also simplifies to 3.3 cm.
Answer:
b=42
a=81
Step-by-step explanation:
The slope in the equation of a line is the coeffient of x
the equation of a line and a point is
(y-y1)=m(x-x1)
where m is the slope so 3 is the slope
Pemdas
parentheses/exponents/multiplication/division/addition/subtraction (always remember this, you will always need it in math)
(10-3)+(4-9)
you multiply 5x2 in the parentheses along with 2x2 and 3x3 because of pemdas. so your equation would look like this
(7)+(-5)
then you would do the subtraction inside of the parentheses
then you would add positive 7 and negative 5 which would give you positive 2
7+-5=2
