If WXY has right angle at X, 70 degree angle at W, and 20 degree angle at Y, and WX is 1, can you help me find XY?
For angle W TAN W = opposite side / adjacent side = XY / 1
so tan 70 = XY/ 1
(1) * tan 70 = xy < ====== finish from here
1 / tan(20º)