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Isaac is looking through binoculars on a whale watching trip when he notices a sea otter in the distance. If he is 20 feet above sea level in the boat, and the angle of depression is 30 degrees, how far away from the boat is the otter (to the nearest foot)?
 one year ago
 one year ago
Isaac is looking through binoculars on a whale watching trip when he notices a sea otter in the distance. If he is 20 feet above sea level in the boat, and the angle of depression is 30 degrees, how far away from the boat is the otter (to the nearest foot)?
 one year ago
 one year ago

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mark_o.Best ResponseYou've already chosen the best response.1
hello are you there? do u think you can draw this first before you can solve?
 one year ago

mark_o.Best ResponseYou've already chosen the best response.1
do you know the angle of depression?
 one year ago

mark_o.Best ResponseYou've already chosen the best response.1
the height y=20 , the x= distance angle theta = angle of depression
 one year ago

janessiaBest ResponseYou've already chosen the best response.0
so how do i solve this?
 one year ago

mark_o.Best ResponseYou've already chosen the best response.1
sorry my pc got frozen,,, yes try that tangent
 one year ago

mark_o.Best ResponseYou've already chosen the best response.1
let me know what you getting
 one year ago

mark_o.Best ResponseYou've already chosen the best response.1
\[\tan \theta =\frac{ 20 }{ x } ,......\] then what is x=?
 one year ago

mark_o.Best ResponseYou've already chosen the best response.1
memorized sin A= opposite/ hypotenuse cos A= adjacent/hypotenuse tan A= opposite/adjacent
 one year ago

janessiaBest ResponseYou've already chosen the best response.0
ohk but hmmmm??? im so confused
 one year ago

janessiaBest ResponseYou've already chosen the best response.0
just forget it its fine
 one year ago

mark_o.Best ResponseYou've already chosen the best response.1
\[\tan \theta =\frac{ 20 }{ x }\] so here we want x, therefore multiply both sides by x, to get \[xtan \theta =\frac{ 20 }{ x }.x\] \[x \tan \theta =20\] divide both sides by tan o gives \[\frac{ x \tan \theta }{ \tan \theta }=\frac{ 20 }{ \tan \theta } \] w/c gives \[x=\frac{ 20 }{ \tan \theta }....\] x=?
 one year ago

mark_o.Best ResponseYou've already chosen the best response.1
did you get it? angle of depression \[\theta =30\]
 one year ago

mark_o.Best ResponseYou've already chosen the best response.1
so x= 20/ tan 30 what did you get?
 one year ago
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