I need help with these problems please, and please answer all parts of the problems. Also, please make it legible.

\"[ 1 H t P t2+1 t2+1 ~=[- t H 1 i t2+1 t2+1 The binormal vector is B = (D) i+ (D) j+ (ED k. (Simplify your answers. Use integers or fractions for all numbers in the expression.) If you already know lal and |v|, then the formula an = k/v| gives a convenient way to find the curvature. Use it to find the curvature and radius of curvature of the curve r(t) = (cost+ t sin t) i+ (sin t -t cos t) j, t> 0. . . . . . The curvature is