The answer is 30. 5/10 is equal to 15/30
I am assuming you mean 4/7 as the sine or cosine cannot be higher than 1.
Lets find <span>θ,
</span>
θ = [sin-1](4/7) = 34.85 °
But lets take into account that this value is the equivalent in Quadrant I.
If Θ lies in Quadrant II , then θ = 180 ° - 34.85 ° = 145.15 °
So cosθ = cos (145.15) = -0.821
Answer:

Step-by-step explanation:

Using the formula above,
slope of line

Answer:

Step-by-step explanation:
We have that

and

This implies that;

and

Now find and expresion for

Which is




Answer:

Step-by-step explanation:
If we graphed y=1, then it would be a horizontal line where a point would be on (0,1).
A horizontal line has no slope, and the y-intercept for y=1 is one.