It will be b=4√2 PROCEDURE: it will be solved with the help of trigonometric ratios sin <span>θ = perp/hyp </span>hyp= perp/sin <span>θ </span>hyp= 4/sin45 hyp=4/(<span>√2/2) </span>hyp=(4*2)/<span>√2 </span>hyp=8/<span>√2 </span>hyp=(8/√2)*(√2/<span>√2) </span>hyp=(8√2)/(√2*<span>√2) </span>hyp=(8√2)/2 hyp=4<span>√2 answer