[" If "sin^(2)theta=(x^(2)+y^(2)+1)/(2x)," then "x" must be "],[" (1) "-3],[" (2) "-2],[" (3) "1],[" (4) None of these "]

If sin^2theta=(x^2+y^2+1)/(2x) , then x must be

If sin^(2)theta=(x^(2)+y^(2)+1)/(2x), then x must be -3 (b) -2(c)1(d) none of these

If sin^2theta=(x^2+y^2+1)/(2x) , then x must be -3 (b) -2 (c) 1 (d) none of these

If sin^2theta=(x^2+y^2+1)/(2x) , then x must be -3 (b) -2 (c) 1 (d) none of these

If sin^2theta=(x^2+y^2+1)/(2x) , then x must be -3 (b) -2 (c) 1 (d) none of these

If y=(sin^(-1)x)^2,\ then (1-x^2)y_2 is equal to x y_1+2 (b) x y_1-2 (c) x y_1+2 (d) none of these

If the equation 1+sin^(2)x theta=cos theta has a non- zero solution in theta ,then x must be (1) An integer ( (2) A rational number (3) An irrational number ( 4 ) None of these

If 1/2sin^(-1)[(3sin2theta)/(5+4cos2theta)]=tan^(-1)x , then x =

If x=sin(2tan^(-1)2)and y=sin((1)/(2)tan^(-1).(4)/(3)) , then prove that y^2 = 1 - x