First, determine the quadrant the problem will be in by looking at the signs. In his case, it will be in quadrant III. Then, it is best to use the reciprocal identities first because they are the easiest and fastest to find. However, you are not required to use them first. Afterwards, you can use the pythagorean, ratio, or reciprocal identities to find the remaining trig functions. You can also use SOHCAHTOA to solve this problem (as seen in the last image). Draw the triangle in quadrant III and label the sides. Then, use the trig ratios to solve for each trig function.
Please pay special attention to the final answers of the trig functions. There should never be a radical in the denominator. Remember to always rationalize! Furthermore, it is important to pay attention to the signs in front of each answer. You should write the signs in at the beginning to make sure you do not forget. Good luck!
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