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janessia
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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)?
 2 years ago
 2 years ago
janessia Group Title
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)?
 2 years ago
 2 years ago

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mark_o. Group TitleBest ResponseYou've already chosen the best response.1
hello are you there? do u think you can draw this first before you can solve?
 2 years ago

janessia Group TitleBest ResponseYou've already chosen the best response.0
how would i draw it?
 2 years ago

mark_o. Group TitleBest ResponseYou've already chosen the best response.1
do you know the angle of depression?
 2 years ago

mark_o. Group TitleBest ResponseYou've already chosen the best response.1
dw:1351530728427:dw
 2 years ago

mark_o. Group TitleBest ResponseYou've already chosen the best response.1
the height y=20 , the x= distance angle theta = angle of depression
 2 years ago

janessia Group TitleBest ResponseYou've already chosen the best response.0
so how do i solve this?
 2 years ago

mark_o. Group TitleBest ResponseYou've already chosen the best response.1
dw:1351530990457:dw
 2 years ago

mark_o. Group TitleBest ResponseYou've already chosen the best response.1
you can try tangent
 2 years ago

janessia Group TitleBest ResponseYou've already chosen the best response.0
opposite hypotenuse?
 2 years ago

janessia Group TitleBest ResponseYou've already chosen the best response.0
opposite adjacent
 2 years ago

mark_o. Group TitleBest ResponseYou've already chosen the best response.1
sorry my pc got frozen,,, yes try that tangent
 2 years ago

mark_o. Group TitleBest ResponseYou've already chosen the best response.1
let me know what you getting
 2 years ago

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

mark_o. Group TitleBest ResponseYou've already chosen the best response.1
memorized sin A= opposite/ hypotenuse cos A= adjacent/hypotenuse tan A= opposite/adjacent
 2 years ago

janessia Group TitleBest ResponseYou've already chosen the best response.0
ohk but hmmmm??? im so confused
 2 years ago

janessia Group TitleBest ResponseYou've already chosen the best response.0
just forget it its fine
 2 years ago

mark_o. Group TitleBest 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=?
 2 years ago

mark_o. Group TitleBest ResponseYou've already chosen the best response.1
did you get it? angle of depression \[\theta =30\]
 2 years ago

mark_o. Group TitleBest ResponseYou've already chosen the best response.1
so x= 20/ tan 30 what did you get?
 2 years ago
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