Trigonometric Ratios
Math ⇒ Trigonometry
Trigonometric Ratios starts at 9 and continues till grade 12.
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See sample questions for grade 11
Explain why tan 90° is undefined.
If cos θ = -1/2 and θ is in the third quadrant, what is the value of sin θ?
If sin θ = 0.6 and θ is in the second quadrant, what is the value of cos θ?
If sin θ = 0.8 and θ is in the first quadrant, find tan θ.
If sin θ = 3/5 and θ is in the first quadrant, find cos θ.
If sin θ = 5/13 and θ is in the second quadrant, what is the value of cos θ?
If the adjacent side to angle θ in a right triangle is 7 units and the hypotenuse is 25 units, find cos θ.
If the hypotenuse of a right triangle is 10 units and the side opposite to angle θ is 6 units, find sin θ.
If cos θ = 0.5 and θ is an acute angle, what is the value of θ? (1) 30° (2) 45° (3) 60° (4) 90°
Which of the following is NOT a trigonometric ratio? (1) sin (2) tan (3) sec (4) log
Which of the following is the correct value of cos 0°? (1) 0 (2) 1 (3) -1 (4) undefined
Which of the following is the correct value of cosec 90°? (1) 0 (2) 1 (3) undefined (4) -1
Fill in the blank: tan θ = __________ / __________.
Fill in the blank: The reciprocal of sin θ is __________.
Fill in the blank: The value of cos 180° is __________.
Fill in the blank: The value of sin 30° is __________.
True or False: cot θ is the reciprocal of tan θ.
True or False: sec θ is defined for θ = 90°.
True or False: The value of sin θ increases as θ increases from 0° to 90°.
True or False: The value of tan 45° is 1.
