57. A triangle with sides of length 7 and 9 and included angle 72°

Algebra and Trigonometry (MindTap Course List)
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Author:James Stewart, Lothar Redlin, Saleem Watson
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Chapter1: Equations And Graphs
Section1.1: The Coordinate Plane
Problem 41E: 41-42 Pythagorean Theorem In these exercises we use the converse of the Pythagorean Theorem see page...
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57–60 1 Area of a Triangle Find the area of the triangle with
the given description.
- 57. A triangle with sides of length 7 and 9 and included angle 72°
58. A triangle with sides of length 10 and 22 and included angle 10°
59. An equilateral triangle with side of length 10
60. An equilateral triangle with side of length 13
61. Finding an Angle of a Triangle A triangle has an area of
16 in?, and two of the sides have lengths 5 in. and 7 in. Find
the sine of the angle included by these two sides.
62. Finding a Side of a Triangle An isosceles triangle has an area
of 24 cm?, and the angle between the two equal sides is
5/6. Find the length of the two equal sides.
Transcribed Image Text:57–60 1 Area of a Triangle Find the area of the triangle with the given description. - 57. A triangle with sides of length 7 and 9 and included angle 72° 58. A triangle with sides of length 10 and 22 and included angle 10° 59. An equilateral triangle with side of length 10 60. An equilateral triangle with side of length 13 61. Finding an Angle of a Triangle A triangle has an area of 16 in?, and two of the sides have lengths 5 in. and 7 in. Find the sine of the angle included by these two sides. 62. Finding a Side of a Triangle An isosceles triangle has an area of 24 cm?, and the angle between the two equal sides is 5/6. Find the length of the two equal sides.
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