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In triangle ABC, cos B = 3/5 and angle A is 90 degrees.  What is tan B?

 Jun 18, 2021

Best Answer 

 #1
avatar+33360 
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cos^2 + sin^2 = 1

   (3/5)^2   + sin^2 = 1

        sin B = 4/5

Tan = sin/cos = 4/3

 Jun 18, 2021
 #1
avatar+33360 
+2
Best Answer

cos^2 + sin^2 = 1

   (3/5)^2   + sin^2 = 1

        sin B = 4/5

Tan = sin/cos = 4/3

ElectricPavlov Jun 18, 2021

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