parisaidan366
30.12.2021 •
Mathematics
I want a way to solve this question
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Ответ:
d
Step-by-step explanation:
Using the Cosine rule to find ∠ A
cosA =
=
=
= , then
∠ A = ( ) ≈ 84.9° ( to 1 dec. place )
Ответ: