2007-03-10 00:35:27 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Find the length of a right triangle when one length and degrees are known
sinθ = Opposite / Hypotenuse
cosθ = adjacent / hypotenuse
tanθ = Opposite / adjacent
cscθ = hypotenuse / opposite
secθ = hypoteuse / adjacent
cotθ = adjacent / opposite
plug in the length and degree into one of the above trigonometric functions and caculate
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2007-03-10 01:35:04 · answer #1 · answered by SAMUEL D 7 · 0⤊ 0⤋
eg. if a side making a right angle is 3cm and the angle opposite it is 30deg
sin30 = opp/hypt = 1/2
so hypt is 2*3 = 6cm
then eiyher by Pythagoras theorem or by cos30 the other side is 3rt3cm
2007-03-10 08:45:04 · answer #2 · answered by ganesan 2 · 0⤊ 0⤋
You use SOH CAH TOA
Sin(theta)=opposite/hypotenuse
Cos(theta)=adjacent/hypotenuse
Tan(theta)=opposite/adjacent
Where opposite is the side opposite to the angle, adjacent is the side adjacent to the angel and hypotenuse is the longest side and theta is the angle
2007-03-10 08:38:07 · answer #3 · answered by Oz 4 · 0⤊ 0⤋
SOHCAHTOA
2007-03-10 08:39:50 · answer #4 · answered by forgetfulpcspice 3 · 0⤊ 0⤋