Question

Find the approximate value of the given trigonometric function by using the figure [picture inside]:
sin1

Answer 1

The sin is y/r. R = 1

Answer 2

since this is an approximation, then sin1 = the y-coordinate of that point on the red "1"....

Answer 3

@NoelGreco @dpaInc thank you! made it so much easier for me to understand what to do with the graph

Answer 4

yw...
in fact, the definition of sine IS the y-coordinate of a point on the unit circle...

Answer 5

@dpaInc how do i find tan 0.8?

Answer 6

are we still approximating?
\(\huge tan(0.8)=\frac{sin(0.8)}{cos(0.8)} \)

Answer 7

@dpaInc we are by approximating by using the graph

Answer 8

0k.... using the graph by @Noelgreco,