Answer:
3.6
Step-by-step explanation:
For the 20-deg angle, x is the opposite leg, and 10 cm is the adjacent leg. The trig ratio that relates the opposite leg to the adjacent leg is the tangent.
[tex] \tan A = \dfrac{opp}{adj} [/tex]
[tex] \tan 20^\circ = \dfrac{x}{10~cm} [/tex]
[tex] x = (10~cm)\tan 20^\circ [/tex]
[tex] x = 3.6~cm [/tex]
