document.write( "Question 617824: If sin θ = 0.42 then what does sin (180+θ) equal?
\n" ); document.write( "I recently did a trigonometry test and this was one of the questions on the non-calculator section. I know how to work it out using a calculator but I'm not sure how to do it without one. \n" ); document.write( "

Algebra.Com's Answer #388578 by lwsshak3(11628) $\"\"$ $\"About$

You can put this solution on YOUR website!
If sin θ = 0.42 then what does sin (180+θ) equal?
\n" ); document.write( "Use sin addition formula to solve
\n" ); document.write( "sin(s+t)=sin s cos t+cos s sin t
\n" ); document.write( "=sin180cosθ+cos180sinθ
\n" ); document.write( "=0*cosθ+(-1)(.42)
\n" ); document.write( "=-.42
\n" ); document.write( " \n" ); document.write( "

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