Expression 4: "y" equals left parenthesis, tan "a" , right parenthesis times "x" left brace, 0 less than "x" less than cos "a" , right brace Has graph. To audio trace, press ALT+T.y=tana·x0<x<cosa
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Expression 5: "y" equals left parenthesis, tan "a" , right parenthesis times "x" left brace, cos "a" less than "x" less than 0 , right brace Has graph.y=tana·xcosa<x<0
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Expression 6: "x" equals cosine ( "a" ) left brace, 0 less than "y" less than sin ( "a" ) , right brace Has graph. To audio trace, press ALT+T.x=cos(a)0<y<sin(a)
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Expression 7: "x" equals cosine ( "a" ) left brace, sin ( "a" ) less than "y" less than 0 , right brace Has graph.x=cos(a)sin(a)<y<0
