Length of the opposite side, which is four, over the length of the adjacent side, over three. The tangent of theta is going to be equal to the That what trig function involves the opposite of an angle? So the opposite of an angle,Īnd the adjacent of an angle? Well, tangent does. So this side has a length of four, and we know just fromĮven our basic SOHCAHTOA definitions of trig functions So if we were to createĪ right triangle here, this side would have a length of three, and then we have a height of four or the y-coordinate is four. We could just construct a right triangle for this one in particular. Now to figure out this theta, there's a couple of ways to think about it. We're gonna move three in the horizontal direction,Īnd we're gonna move four in the vertical direction. The x-component is three and the y-component isįour, and you see that here. In the vertical direction or you could view this as DIRECTION OF VECTOR 2D PLUSThe i unit vector, plus four times the unit vector Times the unit vector in the horizontal direction, In unit-vector notation, sometimes this is calledĮngineering notation, we would say it's three So in this first one, I have the vector u. What these thetas are going to be on your own, and we're gonna figure 'em out in degrees. And like always, pause this video and see if you could figure out And we're gonna see if we can figure out the angles that theyįorm, the positive angles that they form with the positive x-axis. Where their initial points or their tails are Vectors, and we're gonna draw them in standard form, Going to do in this video is look at a series of
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |