How do you find the values of all six trigonometric functions of a right triangle ABC where C is the right angle, given a=20, b=21, c=29?
1 Answer
Feb 19, 2018
Use the identities.
Explanation:
The answers you come up with are going to depend on whether you're evaluating
We are given the lengths of all sides.
Drawing a model at this point is helpful.
We know the identities of the three normal trig functions:
SOH
CAH
TOA
We can just substitute in our values:
sinA=2029 cosA=2129 tanA=2021
And flip them for the inverse functions.
cscA=2920 secA=2921 cotA=2120
We could easily do the same for
sinB=2129 cosB=2029 tanB=2120 cscB=2921 secB=2920 cotB=2021