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  • 04-05-2018
  • Mathematics
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What is the value of x? sin(x+34)°=cos(2x+20)°

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calculista
calculista calculista
  • 13-05-2018
we know that
if sin A=cos B
then 
angle A and angle B are complementary angles
so
A+B=90 degrees
in this problem
(x+34)+(2x+20)=90-------> 3x+54=90----> 3x=90-54-----> x=36/3----> x=12°

the answer is
the value of x is 12 degrees
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