1. The first question is a trig ratios problem. The first thing you do is draw and label the triangle because it isnt drawn for you. Next, you find the correct formula which is cos. You fill the numbers of your triangle into the formula. It will be cos(67)=18/x. After that you solve it. The answer will be x= 46.036.

2. This type of question is a pythagorean theorem problem. The first thing you do is label the triangle. After that you fill in the number into the formula which will be 17^2+13^2=c^2. Then, you multiply it by itself. Then, you add the numbers which will be 458=c^2. Then you do the square root. The answer is c=21.401

3. This type of question is a trig ratios problem. The first thing do is label the triangle. After that you find the correct formula which is tan. Then, you fill in the numbers into the formula which will be tan(15)=x/22. After that you solve for the variable. The answer will be x=5.896.

4. This type of question is a trig ratios problem also. The first step is to label the triangle. Next, you find the correct formula which is sin. Then, you put the numbers into the equation which is theta=18/25. Next, you solve it then do the inverse. The answer is theta=46.054.

5a. The first step is to find c using law of cosines. The first thing you do is label the triangle. The next thing is to find the correct formula which is c^2= a^2+b^2- 2abCosC. The next thing you do is fill in the formula with the correct numbers. After that you multiply what’s necessary which is 900+400-1200•.515. Then you do the square root then the answer will be c=26.115.
b. This step we’re finding A using law of sin. The first thing you do is label the triangle. The next thing is to fill in the correct numbers into the formula which is 26.115/sin(59)=a/sin(30). Then you do sin for both denominators which will be 26.115/.857=a/.5. Then you cross multiply which will be 13.058=.857a. Then you divide and the answer will be A= 15.237.
c. This step you take the answer you got for A and C then subtract it by 180 , which will be 180-59-15.237 and the answer will 105.763.
