Assuming all angles are to be calculated.
Using the cosine rule:
a^2=b^2+c^2-2bc(cos(A))
=>
cos(A)=(b^2+c^2-a^2)/(2bc)
substitute values,
cos(A)=(17^2+19^2-22^2)/(2*17*19)=83/323=0.25697
A=75.11 degrees
similarly
cos(B)=(19^2+22^2-17^2)/(2*19*22)=139/209=0.66507
B=48.31 degrees
cos(C)=(22^2+17^2-19^2)/(2*22*17)=103/187=0.55080
C=56.58 degrees
Check: (75.11+48.31+56.58)=180.00 degrees, ok.
Note:
1. Better accuracy than required is calculated for a more accurate check. You need to round answers to the specified accuracy.
2. In fact, not all tables are made from formulas. Some tables are compiled by experimentation and require hundreds and thousands of man-years to complete (e.g. steam tables).
is the required equation.
<u>Step-by-step explanation:</u>
Equation of line is given as, -2x + 3y = 15
Now we have to write the equation in y = mx+ b form, where m is the slope and b is the y- intercept.
So the above line can be written as,
3y = 2x+ 15
Dividing both sides by 3 we will get,
is the equation of the given line
If a line is parallel to the given line then its slope must be the same, so the equation of line parallel to the given line is,
is the required equation.
Answer: 0.5
1) convert to I proper fraction
2) divide the fraction
9-n would be the proper equation
