document.write( "Question 920460: Find the exact value of the trigonometric function at the given real number.\r
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Algebra.Com's Answer #558389 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
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document.write( "Hi
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document.write( "Need to KNOW: cos (-θ) =cos( θ)  and sin(-θ) = -sin θ and tan(-θ) = - tan θ
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document.write( "cos(-π/4) = cos(π/4)= √2/2  
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document.write( "csc(-π/4) = 1/cos(π/4)=  2/√2 = √2\r
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document.write( "cot( -π/4 )  = cos (-π/4)/sin(-π/4) = (√2/2)/(-√2/2) =  -1
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document.write( "...............
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document.write( "θ	radians	sin θ	cos θ	tan θ
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document.write( "0°	0	0	1	0
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document.write( "30°	π/6	1/2	√3/2	√3/3
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document.write( "45°	π/4	√2/2	√2/2	1
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document.write( "60°	π/3	√3/2	1/2	√3
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document.write( "90°	π/2	1	0	─
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