Odds and Even functions Evaluating trig functions Use a calculator to evaluate trig functions

Odds and Even Functions  Odd Functions sin (-  ) = -sin  tan (-  ) = -tan  csc (-  ) = -csc  cot(-  ) = -cot  Even Functions cos (-  ) = cos  sec (-  ) = sec 

Example  If sin (-  ) = 3/5 Find sin (  ) csc (  ) If cos (  ) = -3/4 Find cos (-  ) sec (-  ) If cos (  ) = 4/5 Find cos (  -  ) cos (  +  )

The Six Trigonometric Functions Hypotenuse Adjacent Opposite A B

The Six Trigonometric Functions Hypotenuse Adjacent Opposite A B

6 Trigonometric Functions sin  = oppcos  = adjtan  = opp hyp hyp adj AKA S OH C AH T OA csc  = hypsec  = hypcot  = adj opp adj opp And their reciprocals!!!

Example Find the values of the six trigonometric functions of  

Example Find the values of the six trigonometric functions of . 4  4

Example Find the values of the six trigonometric functions of . cos  = 5/7

Example Find the values of the six trigonometric functions of . cot  = 5

Example Find the values of the six trigonometric functions of . sec  = 6

Example Find the values of the six trigonometric functions of . csc  =17/4

Homework  PAGE103 (31, 33, 35)  Page 113 (1-21 odd)