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Finding exact value of tan 165°
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So I know that the numbers that make up 165 is 30, 45, and 90, but what am I exactly supposed to now? I added 30 and 90 so now I have tan 120 and tan 45, and I know I can use tan ( A b B) = ( tan A tan B ) / ( 1 - tan A tan B )
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- 6 years ago
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