document.write( "Question 972990: You are given the value of tan θ. Is it possible to find the values of all the other trigonometric functions without finding the actual measure of the angle θ? \n" ); document.write( "
Algebra.Com's Answer #595266 by solver91311(24713) You can put this solution on YOUR website! \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Trick question. Except for cotangent, you cannot find THE value of the other functions, you can only find all possible values of the other functions.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "For example, let \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Then from the definition of tangent,\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Square both sides\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Use the Pythagorean Identity\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Then do a bunch of algebra that I will let you verify on your own:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Similarly\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "And the other three functions are just the reciprocals of the ones we now know.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "However, for any given non-zero value of \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "John \n" ); document.write( " \n" ); document.write( "My calculator said it, I believe it, that settles it\r \n" ); document.write( "\n" ); document.write( " |