If cos(2/3(x) + 20) ° = sin(2x – 10)”, find the acute angles of the corresponding right triangle.
2 answers:
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For this case we must find the quotient of the following expression:
By definition of power properties we have:
Rewriting the expression we have:
By definition of multiplication of powers of the same base we have to put the same base and add the exponents:
Answer:
Begin by subtracting 1/8 from both sides to get 
and get a common denominator of 8 on the right:
. Now simplify and cross-multiply: 39x = -16 andx = -16/39