Answer:
5 i hope this helps :)
Step-by-step explanation:
a = √c2 - b2
= √132 - 122
= √25
= 5
∠α = arcsin (a/c)
= arcsin (5/13)
= arcsin (0.38461538461538)
= 0.39479 rad = 22.62° = 22°37'12"
∠β = arcsin (b/c)
= arcsin (12/13)
= arcsin (0.92307692307692)
= 1.17601 rad = 67.38° = 67°22'48"
h = a × b over c
= 5 × 12 over 13
= 4.61538
