anonymous
  • anonymous
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Geometry
  • Stacey Warren - Expert brainly.com
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
I have an opposite leg of a right triangle that is 40mm long, I have an adjacent leg of 165mm what is the measure of angle a which is the angle in between the hypotenuse and the adjacent leg
anonymous
  • anonymous
what is the sine, cosine, and tangent ratios for ∠ A.
anonymous
  • anonymous
i wont give u the answer but i will help you

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anonymous
  • anonymous
ok that is what I wanted
anonymous
  • anonymous
first of all we need to use cosine since were dealing with adjacent/hypotenuse
anonymous
  • anonymous
what we first want to do tho is use tangent to find the length of the hypotenuse
anonymous
  • anonymous
actually for the hypotenuse we could do a^2=b^2=c^2
anonymous
  • anonymous
the length is about 170
anonymous
  • anonymous
But he need to find the angle
anonymous
  • anonymous
not the hypotenuse
anonymous
  • anonymous
begzat
anonymous
  • anonymous
to find the angle you need to find the hypotenuse
anonymous
  • anonymous
no
anonymous
  • anonymous
yep
anonymous
  • anonymous
169.78 is the length of the hypotenuse
anonymous
  • anonymous
the hypotenuse is 170 so we dont need to find it
anonymous
  • anonymous
do you know what is Trigonometric Ratios
anonymous
  • anonymous
alright then from there is pretty simple
anonymous
  • anonymous
i rounded
anonymous
  • anonymous
if you know Trigonometric Ratios formula you can find very easy the angle
anonymous
  • anonymous
ok but what are the steps i forgot
anonymous
  • anonymous
okay i will post the formulas and you will find wich one you need to use
anonymous
  • anonymous
ok
anonymous
  • anonymous
sin=opposite leg/ hypotenuse cos=adjacent leg/hypotenuse tan=opposite leg/ adjacent leg
anonymous
  • anonymous
know which one you need to use
anonymous
  • anonymous
now***
anonymous
  • anonymous
so I need to use cosine
anonymous
  • anonymous
no because you know opposite and adjacent leg
anonymous
  • anonymous
i also know hypotenuse it is 170
anonymous
  • anonymous
but on the question it said that you know opp. and adj.
anonymous
  • anonymous
you can use tan if you want
anonymous
  • anonymous
I forgot to post the hypotenuse
anonymous
  • anonymous
okay so you can use all
anonymous
  • anonymous
but which one helps me find my angle
anonymous
  • anonymous
all
anonymous
  • anonymous
you can use tan=opp./adjacent leg
anonymous
  • anonymous
well can you help me with the steps for cos
Directrix
  • Directrix
>well can you help me with the steps for cos The cosine of an acute angle of a right triangle is the ratio of the length of the leg adjacent to the hypotenuse to the hypotenuse length. cos(A) = 165/169.78 cos(A) = 0.9718459 approx A = ? |dw:1362220656246:dw|

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