In a right triangle, the side opposite θ is 176 cm and the hypotenuse is 374 cm. Find sin θ as a fraction.
Answer and explanation
8/17
176/374 = 8/17
Subjects
Trigonometry
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Sample exercises
In a right triangle, the legs opposite and adjacent to θ are 10 cm and 35 cm. Find tan θ as a fraction.
Answer and explanation
2/7
10/35 = 2/7
165° equals kπ radians. Find k as a fraction or integer.
Answer and explanation
11/12
165 × π/180 = 11/12π
Study notes
Sine in a right triangle
Name the angle first; opposite is the side across from that angle.
Grades 9–12Tangent in a right triangle
The adjacent leg is next to the angle; it is not the hypotenuse.
Grades 9–12Degrees and radians
A half turn is 180° or π radians.
Grades 10–12Trigonometry · Formula sheet
Rules, conditions and small examples in one printable reference.
Grades 9–10Trigonometry · Formula sheet
Rules, conditions and small examples in one printable reference.
Grades 11–12Trigonometry: identities and ratios
A focused reference to use alongside your practice.
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