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Basic Trigonometric Ratios (Sin, Cos, Tan) Worksheet
Apply SOH-CAH-TOA definitions and evaluate special angle trigonometric ratios (30°, 45°, 60°, 90°). 10 practice problems.
Trigonometry & Angles
Medium / Intermediate
High School (Grades 9–12)
10 Problems
Name:
Date:
Class:
Score:
______ / 10
1)
What is sin(30°)? (fraction or decimal):
2)
What is cos(60°)? (fraction or decimal):
3)
What is tan(45°)?:
4)
What is sin(90°)?:
5)
In a right triangle, opp = 3, hyp = 5. Find sin(θ):
6)
In a right triangle, adj = 4, hyp = 5. Find cos(θ):
7)
In a right triangle, opp = 3, adj = 4. Find tan(θ):
8)
What is cos(0°)?
9)
In a right triangle, opp = 5, hyp = 13. Find sin(θ):
10)
What is sin(0°)?
Answer Key & Solutions
Basic Trigonometric Ratios (Sin, Cos, Tan) Worksheet
#1:
0.5
sin(30°) = 1/2 = 0.5.
#2:
0.5
cos(60°) = 1/2 = 0.5.
#3:
1
tan(45°) = opp / adj = 1 / 1 = 1.
#4:
1
sin(90°) = 1.
#5:
3/5
sin(θ) = opp / hyp = 3/5 = 0.6.
#6:
4/5
cos(θ) = adj / hyp = 4/5 = 0.8.
#7:
3/4
tan(θ) = Opposite / Adjacent = 3/4.
#8:
1
cos(0°) = 1.
#9:
5/13
sin(θ) = Opposite / Hypotenuse = 5/13.
#10:
0
sin(0°) = 0.
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