ΘX (1,-1) ? sin(θ) = cos(θ) = tan(θ) = csc(θ) = sec(θ)...

Transcript

00:01 The need is to find theta in each of the following.

00:03 And i'm not sure if we want to do this in degrees or if we want to do this in radiance.

00:08 So i'm going to go ahead and just do it in degrees because that's normally in this situation is what we normally do.

00:15 So i'm going to go ahead and start with the ones that i can just go straight on my calculator.

00:19 So here i'm going to go, theta is going to be the inverse cosine of 1 .44.

00:26 Here i can say that theta is going to be the inverse tangent of three square roots.

00:31 Now here we have a problem.

00:33 There was no number in here.

00:35 So i'm just going to assume that that's a two.

00:37 And then you can change the number according to what's actually there.

00:41 Here i can say theta is going to be the inverse sign of negative 1.

00:46 Now before i do the set the others up, we got to get them into a function we can use on our calculator.

00:52 So i'm going to think instead of secant, i'm going to think.

00:55 Cosine because they are reciprocal.

00:58 So let me rewrite that.

00:59 Cosine theta is going to be 1 over negative point 4 .4.

01:03 So now i can say theta is going to be the inverse cosine of 1 over negative 0 .44.

01:11 Okay.

01:12 Then i'm going to look at the cosecant, which is the reciprocal of sign.

01:18 So that's going to be 1 over negative 52.

01:21 So theta then is going to be the inverse sign of 1 over.

01:25 Negative 52.

01:27 Now let's go ahead and start.

01:28 I'm just going to start at the bottom...

\theta X (1,-1) ? sin(\theta) = cos(\theta) = tan(\theta) = csc(\theta) = sec(\theta) = cot(\theta) =