Answer:
Tan θ = y/z
Step-by-step explanation:
Reference angle = θ
Opposite side to θ = y
Adjacent side = z
Thus:
Tan θ = opposite/adjacent
Apply pythagorean theorem:
ABD is a right triangle with angle ADB = 90
hence AD = where BD = 10 because it is half of BC
AD = =
The answer is B
Hope this helps
Brainliest??