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Helppp i literally dont understand this at all

Helppp i literally dont understand this at all
asked 146k views
12 votes
Helppp i literally dont understand this at all

Helppp i literally dont understand this at all-example-1
asked
User Foxiris
by
7.7k points

1 Answer

7 votes

Answer:

D. Substitution

Explanation:

I don't know how to explain it other than that they substituted the 50° angle into the original equation.

answered
User Alyoka
by
8.4k points
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