Finding Components 2

Find the x and y components of 40 m pointing 30^o north of east.

40 m is what in this triangle?
1. opposite
2. adjacent
3. hypotenuse
Find the x and y components of 40 m pointing 30^o north of east.

hypo = 40 m
x is what in relation to 30^o?
1. opposite
2. adjacent
3. hypotenuse
Find the x and y components of 40 m pointing 30^o north of east.

40 m = hypo
x = adj

Which of the following will you use?
1. sin
2. cos
3. tan
Find the x and y components of 40 m pointing 30^o north of east.

40 m = hypo
x = adj
cos = adj/hyp

Which of the following is correct?
1. cos 30^o = 40m/x
2. cos 30^o = x/40m
3. x = cos 30^o/40m
4. 40m = x/cos 30^o
Find the x and y components of 40 m pointing 30^o north of east.

40 m = hypo
x = adj
cos = adj/hyp
cos 30^o = x/40m

Now, solve for x. Which of the following is correct?
1. x = cos 30^o/40m
2. x = 40m(cos 30^o)
3. x = 40m/cos 30^o
4. x = 40m - cos 30^o
Find the x and y components of 40 m pointing 30^o north of east.

40 m = hypo
x = adj
cos = adj/hyp
cos 30^o = x/40m
x = 40m(cos 30^o)

x = ____ (Only 1 number after the decimal, please.)
1. 20 m
2. 34.6 m
3. 23.1 m
4. 23.0 m
Find the x and y components of 40 m pointing 30^o north of east.

40 m = hypo
x = adj
cos = adj/hyp
cos 30^o = x/40m
x = 40m(cos 30^o) = 34.6 m

y is what?
1. adj
2. opp
3. hyp
Find the x and y components of 40 m pointing 30^o north of east.

40 m = hypo
x = adj
cos = adj/hyp
cos 30^o = x/40m
x = 40m(cos 30^o) = 34.6 m

y = opp.

Which one will you use?
1. sin
2. cos
3. tan
Find the x and y components of 40 m pointing 30^o north of east.

40 m = hypo
x = adj
cos = adj/hyp
cos 30^o = x/40m
x = 40m(cos 30^o) = 34.6 m

y = opp.
sin = opp/hypo. = y/hypo

Which of the following is correct?
1. sin 30^o = 40m/y
2. 40m = sin 30^o/y
3. sin 30^o = y/40m
4. y = sin 30^o/40m
Find the x and y components of 40 m pointing 30^o north of east.

40 m = hypo
x = adj
cos = adj/hyp
cos 30^o = x/40m
x = 40m(cos 30^o) = 34.6 m

y = opp.
sin 30^o = y/40m

Which of the following is correct?
1. y = 40m - (sin 30^o)
2. y = 40m(sin 30^o)
3. (sin 30^o) + 40m(y)
4. y = 40m/(sin 30^o)
Find the x and y components of 40 m pointing 30^o north of east.

40 m = hypo
x = adj
cos = adj/hyp
cos 30^o = x/40m
x = 40m(cos 30^o) = 34.6 m

y = opp.
sin 30^o = y/40m
y = 40m(sin 30^o)

y = ____ (Round to one number after the decimal, please.)
1. 20.0 m
2. 34.6 m
3. 34.2 m
4. 21.4 m
5. 22.6 m