document.write( "Question 926575: Find the exact values
\n" ); document.write( "1. csc240°
\n" ); document.write( "2. cos270°
\n" ); document.write( "3. cos 3π/4
\n" ); document.write( "4. cot 3π/2
\n" ); document.write( "Can you please help me out and show the steps because it would really help me understand, thank you very much in advance:)
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Algebra.Com's Answer #562346 by lwsshak3(11628) $\"\"$ $\"About$

You can put this solution on YOUR website!
Find the exact values
\n" ); document.write( "1. csc240°
\n" ); document.write( "reference angle of 240-180=60˚ resides in quadrant III where cos<0,sin<0
\n" ); document.write( "csc240˚=1/sin240˚=1/sin60˚=-1/(√3/2)=-2/√3=-2√3/3
\n" ); document.write( "..
\n" ); document.write( "2. cos270°=0
\n" ); document.write( "..
\n" ); document.write( "3. cos 3π/4
\n" ); document.write( "reference angle of π-3π/4=π/4 resides in quadrant II where cos<0,sin>0
\n" ); document.write( "cos(3π/4)=cos(π/4)=-√2/2
\n" ); document.write( "..
\n" ); document.write( "4.cot 3π/2=cos(3π/2)/sin(3π/2)=0/-1=0 \n" ); document.write( "

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