document.write( "Question 915263: if cos θ= -3/4 , pie/2 < θ < pie find the value of sinθ and tanθ \n" ); document.write( "
Algebra.Com's Answer #555503 by mananth(16946)![]() ![]() You can put this solution on YOUR website! cos theta = -3/4\r \n" ); document.write( "\n" ); document.write( "cos^2 theta = 9/16\r \n" ); document.write( "\n" ); document.write( "1-sin^2 theta = 9/16\r \n" ); document.write( "\n" ); document.write( "sin^2 theta = 1-9/16\r \n" ); document.write( "\n" ); document.write( "sin^2 theta = 7/16\r \n" ); document.write( "\n" ); document.write( "sin Theta = +/- sqrt(7)/4\r \n" ); document.write( "\n" ); document.write( "but theta is in the II quadrant\r \n" ); document.write( "\n" ); document.write( "sin Theta = sqrt(7)/4 \n" ); document.write( " |