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if sin(h) then what is cos

Guest Mar 21, 2017
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 #1
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You did not constrain anything!!

The format of the restriction should be 

if sin(h) = (something here) then what is cos(h)

MaxWong  Mar 22, 2017
 #2
avatar+310 
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I think you didnt get what he meant....

 

He wants to express cos(h) using sin(h)

 

Using the identity cos2(h)+sin2(h)=1

Cos2(h)=1-sin2(h)

Then cos(h)=(1-sin2(h))1/2 OR -1*(1-sin2(h))1/2

IN DEGREES

if -90<=h<=90 then its the first option

if 90

IN RADIANS

if -π/2<=h<=π/2 then its the first option

if π/2

Ehrlich  Mar 25, 2017

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