Terminology
Right Triangles
What do I use?
Acute Triangles
Calculations
100
Trigonometry is the study of this shape.
What is triangles?
100
Given two sides of a right triangle, we can use this is find the third side.
What is Pythagorean Theorem?
100
Given all angles and a side length in an acute triangle, and asked to find another side length, what would you use?
What is Sine Law?
100
An acute triangle has...
What is, all three angles less than 90o?
100
Find Tan x. Express as a ratio in lowest terms.
What is 4/3?
200
Sine, cosine and tangent together are called.
What are the primary trigonometric ratios?
200
What trigonometric ratio would you use to find BC?
What is tangent ratio?
200
Which of the following equations is best to use if trying to find a missing angle in an acute triangle.
A. sinA = opposite/hypotenuse
B. a/sinA = b/sinB = c/sinC
C. sinA/a =sinB/b = sinC/c
What is C?
200
True or false. Pythagorean theorem can be used to find a side length in an acute triangle?
What is False?
200
Find b. Express to the nearest tenth.
What is 5.8?
300
The idea of a2 + b2 = c2 is called.
What is Pythagorean Theorem?
300
What trigonometric ratio would you use to find AB?
What is cosine ratio?
300
Which of the following equations is best for finding a missing side in an acute triangle:
A. cosA = a2 - b2 - c2 / -2bc
B. a2 = b2 + c2 - 2bc(cosA)
C. cosA x adjacent = opposite
What is B?
300
This law should be used to find the missing angles in the triangle below.
What is cosine law?
300
Find x. Express your answer to the nearest degree.
What is 53o?
400
The longest side of a right triangle.
What is the hypotenuse?
400
What trigonometric ratio would you use to find y?
What is sine ratio?
400
Given all three sides of an acute triangle, we use this to find the angles.
What is cosine law?
400
This law should be used to find angle Q below.
What is Sine Law?
400
What is 6.02?
500
Triangles with equal corresponding angles and proportional corresponding sides.
What are similar triangles?
500
Given all side lengths of a right triangle, which trigonometric ratio would you use to find the missing acute angles?
What is any trigonometric ratio: sine, cosine, or tangent?
500
Can we use sine law to determine angle B? Justify yes or no.
What is no, because the triangle has an obtuse angle?
500
Find angle A to the nearest degree.
What is 48o?
500
Find the length of QR. Round to the nearest hundredth.
What is 12.22?