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n() using the following diagram. His proof is not correct. C Statement Reason 1 mZB = 0 The acute angles in a right triangle are congruent. AB 2 sin(@) Definition of sine. %3D BC АВ 3 cos(m/B) Definition of cosine. BC AB 4 cos(@) = BC Substitution. 5 cos(8) = sin(0) Substitution

n() using the following diagram. His proof is not correct. C Statement Reason 1 mZB = 0 The acute angles in a right triangle are congruent. AB 2 sin(@) Definition of sine. %3D BC АВ 3 cos(m/B) Definition of cosine. BC AB 4 cos(@) = BC Substitution. 5 cos(8) = sin(0) Substitution

Trigonometry (11th Edition)
Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.
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Relate ratios in right triangles 1 mZB 6 The acute angles in a right triangle are congruent. AB 2 sin(0) Definition of sine. BC АВ 3 cos(m/B) = BC АВ cos(0) = BC Definition of cosine. 4 Substitution. cos(8) = sin(0) Substitution What is the first mistake in Noah's proof? Choose 1 answer: Angles ZB and ZC are complementary, not congruent. Noah used the wrong sides in his ratio for sin(0). Noah used the wrong sides in his ratio for cos(0). Noah substituted a value that wasn't equivalent to the one he replaced. Stuck? Watch a video or use a hint. ne, anywhere. Impact Support community
Transcribed Image Text:Relate ratios in right triangles 1 mZB 6 The acute angles in a right triangle are congruent. AB 2 sin(0) Definition of sine. BC АВ 3 cos(m/B) = BC АВ cos(0) = BC Definition of cosine. 4 Substitution. cos(8) = sin(0) Substitution What is the first mistake in Noah's proof? Choose 1 answer: Angles ZB and ZC are complementary, not congruent. Noah used the wrong sides in his ratio for sin(0). Noah used the wrong sides in his ratio for cos(0). Noah substituted a value that wasn't equivalent to the one he replaced. Stuck? Watch a video or use a hint. ne, anywhere. Impact Support community
Relate ratios in right triangles Noah tried to prove that cos (0)= sin(0) using the following diagram. His proof s not correct. A Statement Reason mZB = 0 The acute angles in a right triangle are congruent. AB 2 sin(@): Definition of sine. BC AB 3 cos(m/B) Definition of cosine. !! BC AB cos(4) Substitution. %3D BC cos(8) = sin(0) Substitution
Transcribed Image Text:Relate ratios in right triangles Noah tried to prove that cos (0)= sin(0) using the following diagram. His proof s not correct. A Statement Reason mZB = 0 The acute angles in a right triangle are congruent. AB 2 sin(@): Definition of sine. BC AB 3 cos(m/B) Definition of cosine. !! BC AB cos(4) Substitution. %3D BC cos(8) = sin(0) Substitution
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