Suppose that a and b are integers, a ≡ 4 (mod 13), and b ≡ 9 (mod 13). find the integer c with 0 ≤ c ≤ 12 such that
1 answer:
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Let's call our unknown angle x .
We know that the sum of the three interior angles of a triangle is 180°
This way,
We get that the third angle measures 29°
Answer:
3/5
Step-by-step explanation:
Using SOHCAHTOA, we know that cos Ф =
So, we know that cos Ф = or, using the hint, 3/5