Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ ¹ ² ³ °
 

You are not logged in. #1 20060831 06:13:05
TrigCan some one help me here im doin some trig and ive no idea how to work out the angle marked x ok im given 2 sides the opposite and hypotinuse no angles are given, how do i work this out?? #2 20060831 06:36:52
Re: TrigSince sin x = opposite/hypotenuse, you can figure out the angle as x = sin¹(opposite/hypotenuse). #3 20060831 06:40:42
Re: Trighmm i know that thats inverse sine but apart form that i have no idea what it means. #4 20060831 07:00:59
Re: TrigYes. For example, if our angle is y and the opposite side is 1 and the hypotenuse is 2, then sin y = 1/2 and y = sin¹(1/2) = 30°. You might need a table of values for inverse trigonometric ratios or a calculator. After a while you'll start to memorize some of the values though . #5 20060831 07:26:41
Re: TrigA little more detailed version: "In the real world, this would be a problem. But in mathematics, we can just define a place where this problem doesn't exist. So we'll go ahead and do that now..." 