I am assuming this will involve trigonometry somehow.
2007-01-17 22:24:11 · 8 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Use trigonometry, where
sinx = opposite/hypoteneuse
cosx = adjacent/hypoteneuse
tanx = opposite/adjacent
where the hypoteneuse is the longest side opposite the right angle, the adjacent is the side between the other angle you know and the hypoteneuse, and the opposite is the side opposite the angle you know.
x = the angle you know
2007-01-17 22:29:18 · answer #1 · answered by hello772345 2 · 0⤊ 0⤋
Draw a right angled triangle ABC right angled at B.
AC is then the hypotenuse,h, the longest side.
If angle C is known , angle A can be found easily as angles in a triangle add up to 180°.
You now have all the angles.
Assume the known side is AB.
Sin C = AB/h
hsin C = AB
h= AB/sinC so h can be found.
tan C = AB/BC
BCtan C = AB
BC = AB/tanC
Thus BC can be found.
You have thus found all sides and all angles.
Remember to draw a right angled triangle to start.
Good luck I`m sure you will manage!
2007-01-18 07:12:49 · answer #2 · answered by Como 7 · 0⤊ 0⤋
in any triangle if u know 3 things out of 3sides and 3 angles....u can find the triangle.
in ur prob. 1 side and 1 angle has given and 1 angle is already known it is 90' (becoz right angle)
so by use of sine,cosine,tan(trignometric ratio) you can find this triangle.
2007-01-18 07:03:49 · answer #3 · answered by yogesh gulhania 2 · 0⤊ 0⤋
suppose you know any angle 'a' and a side say 'l' then you can very well use formula of trigonometry; for example
sin (a)=perpendicular/hypotenuse
cos (a)=base/hypotenuse and
tan (a)=perpendicular /base
put up the given values and you can cal. any side of a right angle tri.
2007-01-18 06:37:55 · answer #4 · answered by teku 1 · 0⤊ 0⤋
I found it use full to remember SOH CAH TOA phonetically. Cant remember why but remember that with a bit of formula transposition it worked at the time. ie. S(angle)=O/H etc, lol
S=sine, C=cosine, T=tangent
O=opposite, H=hypotenuse A=adjacent
Good luck.
2007-01-18 13:57:55 · answer #5 · answered by Nick 1 · 0⤊ 0⤋
Yes,it involves trigonometry
2007-01-18 06:30:30 · answer #6 · answered by santmann2002 7 · 0⤊ 0⤋
Yes, you do need to use trig
Where, Cosθ=Adjcent/Hyptoenuse
Sineθ= opposite/Hypotenuse and Tanθ= opposite/Hypotenuse
2007-01-19 11:40:35 · answer #7 · answered by Anonymous · 0⤊ 0⤋
Tell me the question and I tech you how to work it out.
You need to know sin, cos and tan for this. It will involve trignometry.
2007-01-18 06:34:09 · answer #8 · answered by Anonymous · 0⤊ 0⤋