- The tangent of angle A can be written as tan A and equals the slope from point A(0,0) to point D(2,4).

This tangent ratio = slope = (rise)/(run) = (change in y)/(change in x) = (4-0)/(2-0) = (4)/(2) = 2/1.

Notice the rise is perpendicular to the run.

- Generally, when angle A is in standard position as shown at the graph's origin (0,0)

then tan A equals the ratio = (rise)/(run) = slope.

Also in any right triangle, tan A equals (opposite)/(adjacent) = (y)/(x).

- Your Score Report appears after you have made 6 choices.

- Your Game Score is reduced by the number of butterfly hits.

- To slow the game speed repeat tap/click on the word

- To increase the game speed repeat tap/click on the word Math.

- Speed can also be adjusted with a keyboard's - and + keys.

- Refresh/Reload the web page to restart the game.

- Adjust the sound level of media on your device.

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