What does sin on a calculator stand for
2 answers:
Answer:
Step-by-step explanation:
In trigonometry it expresses the ratio of the opposite side / the hypotenuse of the angle you are given.
For example if you want the sin of 38 degrees, you would put sin(38) =
and the answer would come out as 0.616 roughly. That would mean that if one of the acute angles in a right triangle was 38 degrees and the oppose side length was divided by the hypotenuse, the ratio would be 0.616 approximately.
No matter how big the triangle was to start with, as long as there was a right angle in it and one of the other angles was 38 degrees, then the ratio would be 0.616 between the opposite side and the hypotenuse.
In the diagram below the ratio of BC / AC is the Sin(A). If it is 38 degrees then Sin(A) = BC / AC = 0.616 not matter how big the triangle is.
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Answer:
Step-by-step explanation:
To find the equation, use the slope-intercept formula:
m is the slope and b is the y-intercept. Now, it'll really help to draw a line through the points, connecting them. If you look at point (0,2), we can see that this is the y-intercept (where a point sits on the y-axis when x=0). You can insert this into the equation by taking the y value:
Now, take any two points to find the slope. To make it easier, I'll use (1,5) and (0,2). Use the slope formula for when you know two points:
Rise over run is the change in the y-axis over the change in the x-axis. Insert values:
Solve:
Since both are negative, the result is a positive:
Insert this into the equation as m, the slope:
Done.
