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PRE CALCULUS 4:7 INVERSE TRIGONOMETRIC FUNCTIONS FOR ANY FUNCTION TO HAVE AN INVERSE FUNCTION, INVERSE SINE FUNCTION: Y= EVALUATING THE INVERSE SINE FUNCTION: EXAMPLES: IF POSSIBLE, FIND THE EXACT VALUE. 1. β1 2 arcsin( ) β3 2 2. π ππβ1 ( ) 3.π ππβ1 (2) 4. SKETCH A GRAPH OF Y = arcsin(x) by hand INVERSE COSINE FUNCTION: INVERSE TANGENT FUNCTION: EVALUATING INVERSE TRIGONOMETRIC FUNCTIONS: EXAMPLES: FIND THE EXACT VALUES β2 5. arccos 2 6. πππ β1 (β1) 7. Arctan(0) USE A CALCULATOR TO APPROXIMATE THE VALUE (IF POSSIBLE) 9. arctan(-8.45) 10. π ππβ1 0.2447 11. arccos 2 8. π‘ππβ1 (β1)