Answer:
y = 11.82
Explanation:
use cos:
⇒ cos =
⇒ cos 10 =
cos of 10 is 0.9848
⇒ 0.9848 =
multiply 12 on both sides
⇒ 0.9848 x 12 = x 12
⇒ 11.82 = y
12 or 13
one of the two from my knowledge
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