Which type of angle measures 70°?
Correct answer(s):
- acute angle
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Which type of angle measures 60°?
Correct answer(s):
- acute angle
Which type of angle measures 50°?
Correct answer(s):
- acute angle
Which type of angle measures 40°?
Correct answer(s):
- acute angle
Which type of angle measures 35°?
Correct answer(s):
- acute angle
Which type of angle measures 30°?
Correct answer(s):
- acute angle
Which type of angle measures 25°?
Correct answer(s):
- acute angle
Which type of angle measures 15°?
Correct answer(s):
- acute angle
Which type of angle measures 10°?
Correct answer(s):
- acute angle
In introductory trigonometry, what does ‘similar right triangles’ mean?
Correct answer(s):
- triangles with equal angles and proportional side lengths
In introductory trigonometry, what does ‘angle of depression’ mean?
Correct answer(s):
- the angle made when looking downward from a horizontal line
In introductory trigonometry, what does ‘angle of elevation’ mean?
Correct answer(s):
- the angle made when looking upward from a horizontal line
In introductory trigonometry, what does ‘tangent ratio’ mean?
Correct answer(s):
- opposite ÷ adjacent
In introductory trigonometry, what does ‘cosine ratio’ mean?
Correct answer(s):
- adjacent ÷ hypotenuse
In introductory trigonometry, what does ‘sine ratio’ mean?
Correct answer(s):
- opposite ÷ hypotenuse
In introductory trigonometry, what does ‘adjacent side’ mean?
Correct answer(s):
- the side next to the chosen angle, not the hypotenuse
In introductory trigonometry, what does ‘opposite side’ mean?
Correct answer(s):
- the side across from the chosen angle
In introductory trigonometry, what does ‘hypotenuse’ mean?
Correct answer(s):
- the longest side of a right triangle, opposite the right angle
In introductory trigonometry, what does ‘obtuse angle’ mean?
Correct answer(s):
- an angle greater than 90° but less than 180°
In introductory trigonometry, what does ‘acute angle’ mean?
Correct answer(s):
- an angle smaller than 90°