Pythagoras 1
Pythagoras 2
Either
Trigonometry 1
Trigonometry 2
100
Was Pythagoras Greek or Roman?
Greek
100
What do we call the sides adjacent to the right angle of a right triangle?
The legs
100
When using Trigonometry, the side length across from the angle is called?
Opposite
100
A right-angle is equal to ...
3 angles in a triangle equal...
90 degrees.
180 degrees
100
What's this common acronym used for remembering our trig functions & ratios
SOH-CAH-TOA
SinA = Opp./Hyp.
CosA = Adj./Hyp.
TanA = Opp./Adj.
200
When using Pythagoras Theorem, what side of a triangle is ALWAYS labled "c"?
Hypotenuse
200
When using Pythagoras Theorem, what operation is needed when finding a leg?
c2 - a2 = b2
or
c2 - b2 = a2
200
What is the side next to the angle called?
adjacent
200
What Trig Function:
Sin
200
Find x (rd. to 1 dc.):
x = 68.9
300
Calculate the length of the hypotenuse:
26
300
Calculate the length of the Hypotenuse (answers in radical form!):
sqrt(58)
300
What MUST be true in order to use the pythagorean theorem and/or trigonometry? (that we know of so far)
We are using RIGHT TRIANGLES
300
Solve for x (rd 1 dec.):
x = 6
300
Calculate the angle given: cos(x) = 2/79
Solve for x. (rd. to 1 dc.)
88.5o
400
Calculate x (to 2 dp):
23.24
400
Calculate x (answers in radical form):
x = 4sqrt2
400
Mr. B Factoid:
What's Mr. B's puppies name?
(hint: Hey yo Adrian!)
Rocky
400
Jimmy is 25 ft. from the base of a tree. The angle of elevation to the top of the tree is 51°. Determine the height of the tree. Round the nearest whole foot.
height (x) = 30.
No labels = 1/2 points
400
Jimmy is flying a blimp. The angle of depression to his landing spot is 23°. He has an altitude of 2300m. Determine his current distance to his landing spot. (Round to nearest foot)
Distance (x) = 2,499 ft
No label = 1/2 points
500
d is the midpoint of AC, what is the length of bd?
12
500
Abbie rides her bicycle 21 km west and then 18 km north. How far is she from her starting point? (radical form)
* hint - draw a right angled triangle to help *
3sqrt85 km
500
Using Trigonometry, calculate the Hypotenuse when the Adjacent side = 19 and the angle = 78o.
(Draw a diagram)
c = 91.38
500
Solve for x and y (rd. to 1 dc.):
x = 44.9
y = 45.1
500
HANDS OFF THE TABLE!! Find every side and every angle (1 minute) (rd. to 1 dc.):
A = 36.9 a = 9
B = 53.1 b = 12
C = 90 c = 15