Answer:
a) 1.2 cm
b) 3.5 cm
Explanation:
3.7 cm is the hypotenuse (the longest side of the right-angled triangle)
1.2 cm is the adjacent side for a) , because it is part of that angle and 3.5 cm is opposite for a)
3.5 cm is the adjacent side for b) , because it is part of that angle and 1.2 cm is opposite for b)