BQ#1:Unit P: Concept 1 and 4: Law of Sines and Area Formulas

1. Law of Sines 
We need the law of sines to help determine the missing sides of an oblique triangle. We can also use it to determine the sides of a right triangle. Sin is opposite/ hypotenuse. When we have a problem we will always be given an angle we use one of those angles to help us determine one of the missing sides. The law of sines comes from trig. Sine is only used for right triangles but with non right triangles we can use them too. When we use some we have to make sure the question gives us AAS or ASA 

4. Area Formulas 

Always remember that the area of a right triangle will always be 1/2 bh. B is the base and h is the height. We will not always be given the height so we have to find the height using sine. You use the same method of finding the area of a right triangle for finding the one of an oblique triangle. You split the oblique triangle in half or wherever you can so you can determine the height. Use an angle given to you to determine one of the sides. You keep going until you find the height and use the same equation. It will always relate to the area of a triangle formula because we have to use it in order to get what we are looking for.