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1. What is the exact value of sin 60dg? Answer as a simplified fraction.

 

2. What is the value of x? 

options: 6, 6(sqrt)3, 12, 12(sqrt)3

3. What is the value of x? 

options: 7, 7(sqrt)2, 14, 14(sqrt)2.

Guest Apr 17, 2017
 #1
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1. sin (60°)  =  √3 / 2

 

 

2.  6 √3

 

Proof  

sin 60   =  x / 12

√3 / 2  =  x /12

12 * √3 / 2    = x

6 √3   =   x

 

3.  In a 45-45-90 triangle......the hypotenuse is √ 2   times as long as either leg

So  x  =  (7√2 ) √2   =   7 * 2   =   14

 

 

cool cool cool

CPhill  Apr 17, 2017

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