[size=150][size=200]Practice finding angle in a right angled triangle given two sides using the appropriate trigonometric ratios.[br][/size][/size][size=200]Stop after you attain 10 marks![/size]

Acknowledgements: [br]This version above was adapted from Alex Chik's work at[br]gMath 互動數學教室[br][url=http://www.gmath.hk]http://www.gmath.hk[/url]