document.write( "Question 286992: If the sine of an angle is 3/5 and the angle is not in Quadrant 1, what is the value of the cosine and angle? \n" ); document.write( "
Algebra.Com's Answer #208158 by dabanfield(803)![]() ![]() ![]() You can put this solution on YOUR website! If the sine of an angle is 3/5 and the angle is not in Quadrant 1, what is the value of the cosine and angle?\r \n" ); document.write( "\n" ); document.write( "The hypotenuse of the triangle formed is 5 and the opposite leg is 3. If the adjacent leg is x we know by the Pythagorean Theorem:\r \n" ); document.write( "\n" ); document.write( "x^2 + 3^2 = 5^5 \n" ); document.write( "x^2 = 25-9 \n" ); document.write( "x^2 = 16 \n" ); document.write( "x = 4\r \n" ); document.write( "\n" ); document.write( "The cosine of the angle then is adjacent/hypotenuse = 4/5. \n" ); document.write( "The angle whose sine is .6 is ? (use the trig tables)\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |