Answer:
∠ KLM ≈ 33.7°
Explanation:
using Pythagoras' identity in right triangle JKM
KM² = JK² + JM² = 7² + 4.5² = 49 + 20.25 = 69.25 ( take square root of both sides )
KM =
≈ 8.322 cm
using the sine ratio in right triangle KLM
sin KLM =
=
=
, then
∠ KLM =
(
) ≈ 33.7° ( to 3 significant figures )