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Questions and Answers
In triangle ADEF, what is the length of EF?
In triangle ADEF, what is the length of EF?
- 30 cm
- 25 cm
- 15 cm
- 20 cm (correct)
What is the cosine of angle K in terms of g, k, and m?
What is the cosine of angle K in terms of g, k, and m?
- $\frac{k}{g}$
- $\frac{g}{k}$
- $\frac{m}{k}$ (correct)
- $\frac{k}{m}$
Which side in a triangle is adjacent to angle α, in terms of p, q, and r?
Which side in a triangle is adjacent to angle α, in terms of p, q, and r?
- p (correct)
- r
- q
- q + r
What is the tangent of angle G in terms of g and k?
What is the tangent of angle G in terms of g and k?
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If sin 0 = $\frac{5}{13}$, what is the value of cos 0?
If sin 0 = $\frac{5}{13}$, what is the value of cos 0?
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Study Notes
Triangle Properties
- In triangle ADEF, the length of EF is unknown and needs to be found.
Trigonometric Identities
- The cosine of angle K can be expressed in terms of g, k, and m.
- The tangent of angle G can be expressed in terms of g and k.
Angle Properties
- In a triangle, the side adjacent to angle α is dependent on p, q, and r.
Trigonometric Values
- If sin 0 = 5/13, then the value of cos 0 can be determined using a trigonometric identity.
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