July 9th, 2019, 05:12 PM  #21 
Global Moderator Joined: Dec 2006 Posts: 20,965 Thanks: 2214 
triangle area = base × height / 2 = height / 2 if the base has length 1.

July 9th, 2019, 05:12 PM  #22  
Math Team Joined: Jul 2011 From: Texas Posts: 3,016 Thanks: 1600  Quote:
triangle AFD ... base = 1, height = tan x A = (1/2)bh Last edited by skipjack; July 12th, 2019 at 04:19 AM.  
July 11th, 2019, 04:20 PM  #23 
Newbie Joined: Jul 2019 From: Jordan Posts: 8 Thanks: 0 
You can check it by using Taylor series. It will give you the answer in an easy way. Last edited by skipjack; July 12th, 2019 at 04:19 AM. 

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show, sinx or x, x>0, x>0 
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