Math Is Fun Forum

I guess the grey area is the shaded region.

okay, thank you!

now question 20 is hard, I never understand and remember how to do it

5.04 ft?

cos(65) = x/12
.42=x/12
5.04=x

cos(65)=0.42

I did 65 * 12.

a little. we did one lesson on it.
sin = opp./hyp.
cos = adj./hyp.
tan = opp./adj.

18. In the diagram shown, a 12-foot slide is attached to a swing set. The slide makes a 65 degree angle with the swing set. What is the height of the top of the slide (as close as you can get)?

sin 65 degree = 0.91
cos 65 degree = o.42
tan 65 degree = 2.14

yes, sorry I didn't notice that.
for 15 I'm not sure what formula I should use.

how did you get 60?

Yes the hexagon in the middle.

Okay, I understand.