Please help me in this

Q1. $\tan A =\frac{\sqrt{2}–1}{1},$ show that sin Ax cosA

Hope this helps (^_-) Sin A = p/h CosA= b/h TanA =p/b Thus, p= (root 2-1)x b=1x h=root(2 root2 (root 2 - 1))x