Trig laws pdf

In case 3, angle C will be acute. Case 1. For this case, we take angle C to be obtuse. This case has a wrinkle in it since the cosine of an obtuse angle is negative. In this case, the foot D of this perpendicular will lie outside the triangle. Let h denote the height of the triangle, let d denote BD, and let e denote CD. Case 2. Now consider the case when the angle at C is right. Allyson Tayler, Apr 20, , AM. L4 Exploring the Properties of Exp Functions.

Allyson Tayler, May 18, , AM. L4 Freddy and Trig Transformations c to finish. Allyson Tayler, Apr 11, , AM. L5 Freddy and More Trig Transoformations a. Allyson Tayler, May 9, , AM.

L5 Future Value of an Annuity to fin. L6 Present Value of an Annuity. L6 Putting It All Together. L7 Sinusoidal Functions and their graphs. L7 Using Quad fun Models to solve Problems. Allyson Tayler, Apr 6, , AM. L7a Quadratics summary chart vertex roots graphing. Allyson Tayler, Apr 7, , AM. L8 Creating a quad model from data. Allyson Tayler, Apr 10, , PM. Allyson Tayler, Feb 11, , AM. Unit 1 Performance Tasks. Allyson Tayler, Feb 18, , AM.

Unit 3 Assignment. Allyson Tayler, Mar 22, , AM. Homework and Textbook pgs. Mon, Feb 8. Domain and Range L2. Tues, Feb 9. Wed, Feb Catch up Day. Textbook pgs 13 , 15a, 16 pg 20 , 8, Thurs, Feb Textbook pgs 38 1, pgs 45 , 8a-c. Tues, Feb More graphing using Transformations. Textbook pg 51 2ac, 3, 5, 7ab, 9, Transformations con't L6 Transformations Words to Equations. Fri, Feb Domain and Range of a Quadratic Function. Textbook pg 51 1, 4, 6, 8, Mon, Feb Review - Test is on Tuesday, Feb Review pgs: 1abd, 2ab, , 10, 11 pgs , 11, 13, 14a, Unit Test.

Prep for next unit: pg 62 2, 3, 6, 8. Getting started - reviewing multiplying and dividing terms, and collecting like terms 2. But this is true even when B is an obtuse angle as in the third diagram. There, angle ABC is obtuse. But the sine of an obtuse angle is the same as the sine of its supplement.

These two equations tell us that h equals both c sin B and b sin C. Since the three verions differ only in the labelling of the triangle, it is enough to verify one just one of them. In case 2, angle C will be a right angle. In case 3, angle C will be acute. Case 1.