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In right △ABC, the right angle is at C, m∠A=30degrees, and AC=7√2 units.

 

What is the perimeter of △ABC?

 

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 Nov 28, 2020
 #1
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B =  60°....AC   = 7 √2

 

A =  30°  ....BC =  7 √2 / √3 =    (7/3) √6

 

C = 90°  .....AB =   (14/3)  √6

 

Perimeter  =  [  (7/3 + 14/3) √6  +  7 √2  ]  =   (21/3) √6  +  7 √2  =   7 √6  + 7 √2   units

 

 

cool cool cool

 Nov 28, 2020

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