final review

Question 1

law of cosines SAS

Answer 1

*look for smallest angle first

Question 2

law of cosines SSS

Answer 2

*look for the biggest angle first

Question 3

pythagorean identity 1

Answer 3

sin^2theta + cos^2theta = 1
*sint^2theta = (sin theta)^2

Question 4

pythagorean identity 2

Answer 4

tan^2theta + 1 = sec^2theta
1 + cot^2theta = csc^2theta

Question 5

30-60-90 triangle

Answer 5

30 - 1
60 - root 3
90 - 2

Question 6

45-45-90 triangle

Answer 6

1-1-root 2
root2/2 - root2/2 - 1