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avatar+315 

Pre-calculus/trig

 Apr 26, 2019
 #1
avatar+111394 
+3

If I understand this.....you  are  looking for   " - - "   ????

 

Looking at the right side

 

(1/2) [ sin pi/2 - sin pi/6 ]  =

 

(1/2) [ 1 - 1/2]  =

 

(1/2) (1/2)  =   1/4

 

So

 

" - - "  pi/3 * sin pi/6   = 1/4

 

" - - " pi/3 * (1/2) = 1/4           multiply both sides by 2

 

" - - " (pi/3)  =   1/2

 

The " - - " is    "cos "

 

 

cool cool cool

 Apr 26, 2019
 #2
avatar+315 
+1

Yes, you understood it correctly, that's exactly what I was looking for... thank you!! smiley

Cupcake  Apr 26, 2019

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