Answered: If |a| = 12 cm, |b| = 13 cm, and the…

If |a| = 12 cm, |b| = 13 cm, and the angle between them when placed tail to tail is 35°, find a • b. a) a • b = 57 b) a • b = 128 c) a • b = 11 d) a • b = 24

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

Chapter3: Triangles

Section3.3: Isosceles Triangles

Problem 24E: In concave quadrilateral ABCD, the angle at A measures 40. ABD is isosceles, BC bisects ABD, and DC...

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Question

If |a| = 12 cm, |b| = 13 cm, and the angle between them when placed tail to tail is 35°, find a • b.

a)	a • b = 57

b)	a • b = 128

c)	a • b = 11

d)	a • b = 24

Figure in plane geometry formed by two rays or lines that share a common endpoint, called the vertex. The angle is measured in degrees using a protractor. The different types of angles are acute, obtuse, right, straight, and reflex.

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