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Material Type: Assignment; Class: College Trigonometry; Subject: Mathematics; University: Fayetteville State University; Term: Unknown 1989;
Typology: Assignments
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Chapter 4 Applications of Trigonometric Functions 4.1 Right triangle trigonometry; Applications
(4) We can express the trigonometric functions of θ as ratios of the sides of a right triangle.
sin θ = = csc θ = =
cos θ = = sec θ = =
tan θ = = cot θ = =
Case 2: Two sides and the angle opposite one of them are known (SSA).
Case 3: Two sides and the included angle are known (SAS).
Case 4: Three sides are known (SSS).
Remark: The law of sines is used to solve triangles for which Case 1 or Case 2 holds.
4.3 The laws of cosines
(2) Special case: Pythagorean Theorem
4.4 Area of a triangle