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Let A be an acute angle such that sin 4A = sin 5A. What is the smallest possible measure of A in degrees?

 Jun 20, 2022
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sin 4A  = sin 5A

 

4A =  180  - 5A

 

9A   =180

 

A  =  20°

 

 

cool cool cool

 Jun 20, 2022

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