(18 - x - 5)+([18 + 5]/2)
Answer:
Step-by-step explanation:
tan 17=h/18
h=18 tan 17
tan 38=(h+x)/18
h+x=18 tan 38
h+x-h=18 tan 38-18 tan 17
x=18(tan 38-tan 17)≈8.56
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