If cos tetha = 20/29 and sin tetha = 21/29 find the value of sin2 tetha + cos2 tetha Share with your friends Share 0 Rishabh Mittal answered this sin θ=2029 and cos θ=2129sin2θ+cos2θ=20292+21292 =400+441841=1 ANS... 0 View Full Answer Uk answered this = sin2theta + cos2theta = ( 21/ 29 )2 + ( 20/29 )2 = ( 401/841 ) + ( 400/841) = 841/841 = 1 2 Uk answered this square of 21 will be 441...i am sorry not 401 4
