Given cos ? = - 4/7 (SEE IMAGE) a) Which 2 sides of a right-angled triangle have a relationship described by the cosine of an angle? b) Draw the triangles of ??? ? in the ‘CAST’ circle c) Show by calculation the exact value of ??? ? .. d) Use the info from the problem to prove the unit formula: ???2? + ???2? = 1
Given cos ? = - 4/7 (SEE IMAGE) a) Which 2 sides of a right-angled triangle have a relationship described by the cosine of an angle? b) Draw the triangles of ??? ? in the ‘CAST’ circle c) Show by calculation the exact value of ??? ? .. d) Use the info from the problem to prove the unit formula: ???2? + ???2? = 1
Given cos ? = - 4/7 (SEE IMAGE) a) Which 2 sides of a right-angled triangle have a relationship described by the cosine of an angle? b) Draw the triangles of ??? ? in the ‘CAST’ circle c) Show by calculation the exact value of ??? ? .. d) Use the info from the problem to prove the unit formula: ???2? + ???2? = 1
a) Which 2 sides of a right-angled triangle have a relationship described by the cosine of an angle?
b) Draw the triangles of ??? ? in the ‘CAST’ circle
c) Show by calculation the exact value of ??? ? ..
d) Use the info from the problem to prove the unit formula: ???2? + ???2? = 1
Transcribed Image Text:S
cose = negative
sin
= positive
negative
tan
cose negative
sine = negative
tan = positive
T
A
cose = positive
sin = positive
= positive
tan
cose = positive
sine = negative
tan = negative
с
Transcribed Image Text:Gitt
4
cos v
7
a) Hvilke 2 sider av en rettvinklet trekant har et forhold beskrevet ved cosinus til en vinkel?
(2
b)
Tegn trekantene til cos vi 'CAST' sirkelen
(E
c) Vis ved regning den eksakte verdien til sin v..
(E
d) Bruk infoen fra oppgaven til å bevise enhetsformelen: sin²x + cos²x = 1
(E
Two-dimensional figure measured in terms of radius. It is formed by a set of points that are at a constant or fixed distance from a fixed point in the center of the plane. The parts of the circle are circumference, radius, diameter, chord, tangent, secant, arc of a circle, and segment in a circle.
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