document.write( "Question 584360: Hello. I would like to ask how we calculate the angle theta(θ) of
\n" ); document.write( "cosθ = 1/sqrt(2).
\n" ); document.write( " From an already solved exercise I found that angle theta (θ) of cosθ = 1/sqrt(2) equals cos(7pi/4) but I do not have the intermediate steps in terms of finding the result.\r
\n" ); document.write( "\n" ); document.write( "Thanks a lot in advance for your help. \n" ); document.write( "

Algebra.Com's Answer #372761 by lwsshak3(11628) $\"\"$ $\"About$

You can put this solution on YOUR website!
Hello. I would like to ask how we calculate the angle theta(θ) of
\n" ); document.write( "cosθ = 1/sqrt(2).
\n" ); document.write( "***
\n" ); document.write( "For a domain of 0-2π, cosθ is >0 only in quadrants I and IV. Its<0 in II and III.
\n" ); document.write( "So, for cosθ = 1/sqrt(2).
\n" ); document.write( "θ=π/4 in quadrant I and 7π/4 in quadrant IV \n" ); document.write( "

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