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anonymous
 one year ago
How can I find the exact value of:
sec[arctan(2)]
anonymous
 one year ago
How can I find the exact value of: sec[arctan(2)]

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jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.3dw:1433030295384:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.3let theta = arctan(2) this means that tan(theta) = 2 = 2/1 recall that tangent deals with opposite/adjacent, so because tan(theta) = 2/1, we know dw:1433030381643:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.3are you able to find the length of the hypotenuse?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.3the question is direct at @Tracy96

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@jim_thompson5910 yep! I got it! So I gotta use Pythagorus, correct?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0length^2+width^2=hypotenuse^ 2

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.3correct @Tracy96

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.3you have to use a^2 + b^2 = c^2 a = 1 b = 2 c = unknown for now dw:1433030530767:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@henryli is correct too!!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@jim_thompson5910 right, so hypotenuse would be sqrt(5) ?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.3yes that is correct dw:1433030615675:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.3now because I let theta = arctan(2), this means sec[arctan(2)] turns into sec(theta)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.3use the drawing to compute sec(theta)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@jim_thompson5910 Mhmm, and sec is just 1/cos right?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.3you can also think of secant as hypotenuse/adjacent

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@jim_thompson5910 True!!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@jim_thompson5910 Thanks so much!! I really appreciate it!!

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.3sounds like you got the final answer, yw
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