What does SOH-CAH-TOA stand for?
sin(x)=opp/hyp
cos(x)=adj/hyp
tan(x)=opp/adj
What is the shape of the base? How do you find the shape's area?
Rectangle Area = length x width
What is the slope of a line parallel to y=1/2x +5
1/2
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C
Triangle ABC is taken to triangle A’B’C’ by a dilation. Which of these scale factors for the dilation would result in an image that was larger than the original figure?
a) 3/5
b) 13/17
c) 1
d) 4/3
Which trig function should be used to solve for x?
6 mm3
What is the slope of a line perpendicular to y=-1/3x -4
3/1 or 3
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ASA
The point (6, 9) is dilated from the origin by a scale factor of 1/3. What are the coordinates of the image?
Solve for the missing side in terms of x (write the equation, you do not have to solve it).
17cos(18) = x
Find the figure's volume.
(4/3)(pi)(7)3= 1436.8 units3
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3
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A
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2
Solve for the missing angle in terms of theta (you do not have to put it in your calculator -- just give the equation).
tan-1(8/5)
Solid A ~ Solid A'
Solid A has a volume of 7 cm3.
Solid A' has a volume of 56 cm3.
What is the volume scale? What is the scale factor?
Volume Scale = 8
Scale Factor = 2
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2/3
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A, B, C, D, F
A polygon has a perimeter of 18 units. It is dilated by a scale factor of 3/2. What is the perimeter of its image?
a) 12 units
b) 24 units
c) 27 units
d) 30 units
A fire ladder is propped up against the building. Find the length of the ladder in terms of x (you do not have to put it in your calculator, just give the equation)
50/cos(60)
A solid with volume 12 cubic units is dilated by a scale factor of 6. Find the volume of the dilated figure.
V= 12 x 63 = 2592 cubic units
What is the slope of a line perpendicular to 7x-5y=20
-5/7
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B
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△FHD ~ △GHE by SAS Similarity Criteria with a scale factor of 2 (or ½, depending on which is your preimage)