Trigonometric Ratios
Math ⇒ Trigonometry
Trigonometric Ratios starts at 9 and continues till grade 12.
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See sample questions for grade 10
If cos θ = 0.6 and θ is an acute angle, what is sin θ?
If sin θ = 0.6 and θ is an acute angle, what is the value of cos θ?
If sin θ = 0.8, what is cos θ?
If sin θ = 1/2, what is the value of θ in degrees (0° < θ < 90°)?
If the adjacent side is 7 units and the hypotenuse is 25 units, what is cos θ?
If the adjacent side is 9 units and the opposite side is 12 units, what is tan θ?
If the opposite side is 5 units and the adjacent side is 12 units in a right triangle, what is tan θ?
If the opposite side is 8 units and the hypotenuse is 17 units, what is sin θ?
Which of the following is NOT a trigonometric ratio?
(1) sine
(2) cosine
(3) tangent
(4) logarithm
Which of the following is the correct value of cos 0°?
(1) 0
(2) 1
(3) -1
(4) 0.5
Which of the following is the correct value of cos 45°?
(1) 0.5
(2) 0.707
(3) 1
(4) 0.866
Which of the following is the correct value of sin 30°?
(1) 0.5
(2) 0.866
(3) 1
(4) 0
Fill in the blank: sin²θ + ________ = 1
Fill in the blank: tan 45° = ________
Fill in the blank: The ratio of the hypotenuse to the opposite side is called ________.
Fill in the blank: The reciprocal of secant is ________.
True or False: tan θ = sin θ / cos θ for all values of θ where cos θ ≠ 0.
True or False: The value of cos θ is always positive for 0° < θ < 90°.
True or False: The value of sin θ increases as θ increases from 0° to 90°.
True or False: The value of sin θ is always less than or equal to 1 for all real values of θ.
