2007-10-31 14:06:10 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Draw a right triangle.
Sine = opposite/hypotenuse
Cosine = adjacent/hypotenuse
Tangent = opposite/adjacent
Your answers will be fractions that don't look "pretty", but that's okay. Remember that "opposite" means the side opposite the angle that you're taking the function of.
2007-10-31 14:09:49 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Use a slide rule. You will be able to see the relationships between the measurements as you do the calculations.
A calculator just hides all that and gives you numbers.
2007-10-31 21:20:21 · answer #2 · answered by forgivebutdonotforget911 6 · 0⤊ 0⤋
Two triangles that are of use are :-
Triangle 1, a 30° , 60° , 90° triangle
Triangle 2, a 45°, 45° , 90° triangle.
Triangle 1
Sides are in the ratio 1 : â3 : 2 and :-
_______cos____sin____tan
30°___â3/2____1/2____1/â3
60°___1/2_____â3/2___â3
Triangle 2
Sides are in the ratio 1 : 1 : â2 and:-
_______cos____sin____tan
45°____1/â2____1/â2___1
Hope this may be of use.
2007-11-01 04:05:56 · answer #3 · answered by Como 7 · 0⤊ 0⤋
SOHCAHTOA
(sow - ka - toe - a)
Sine = opposite / hypotenuse
Cosine = adjacent / hypotenuse
Tangent = opposite / adjacent
2007-10-31 21:09:54 · answer #4 · answered by gitter1226 5 · 0⤊ 0⤋
SOHCAHTOA
sin = opposite/hypotenuse
cosine = adjacent/hypotenuse
tan = opposite/adjacent
2007-10-31 21:10:16 · answer #5 · answered by Emily 1 · 0⤊ 0⤋
unless it is a special angle you would have to use a table or Taylor series expansion about a point close to the angle you are investigating
2007-10-31 21:08:36 · answer #6 · answered by Mαtt 6 · 0⤊ 0⤋