document.write( "Question 1139953: 1. Explain how you can use the unit circle to find tan 180°.
\n" ); document.write( "2. If sin θ = -0.891, what are two values of θ between 0° and 360°? \n" ); document.write( "

Algebra.Com's Answer #760451 by josmiceli(19441) $\"\"$ $\"About$

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180 degrees is 1/2 of a full rotation from
\n" ); document.write( "0 degrees. The $\"+sin%28180%29+\"$ = vertical/ unit vector
\n" ); document.write( "= $\"+0%2F1+\"$ which is zero
\n" ); document.write( "---------------------------------------
\n" ); document.write( "The sine is negative in the 3rd and 4th quadrants
\n" ); document.write( " $\"+arcsin%28+-.891+%29+=+63+\"$ degrees
\n" ); document.write( " $\"+theta+=+180+%2B+63+\"$
\n" ); document.write( " $\"+theta+=+243+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+theta+=+360+-+63+\"$
\n" ); document.write( " $\"+theta+=+297+\"$
\n" ); document.write( "check the math\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

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