When you multiply a number by 4 and then subtract 7, the result is the same as if you first subtract 7 from the same number and
1 answer:
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Answer:
∠ A ≈ 48°
Step-by-step explanation:
Using the Cosine rule to find an angle
cosA =
with a = 10, b = 13 and c = 11
cosA =
=
= , thus
A = (
) ≈ 48° ( to the nearest degree )