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In right triangle ABC, mz B ± mz C. Let sin B = r and cos B = s. B What is sin C – cos C? O A. r+s O B. r-s O C. s-r O D.

In right triangle ABC, mz B ± mz C. Let sin B = r and cos B = s. B What is sin C – cos C? O A. r+s O B. r-s O C. s-r O D.

Trigonometry (MindTap Course List)
Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter3: Additional Topics In Trigonometry
Section3.1: Law Of Sines
Problem 2E: For triangle ABC, the Law of Sines is asinA==csinC.
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Can u answer these 2 with an answer please and explain thank you.

In right triangle ABC, mz B ± mz C. Let sin B =r and cos B = s. B What is sin C – cos C? O A. r+s O B. r-s O C. s-r O D. r
Transcribed Image Text:In right triangle ABC, mz B ± mz C. Let sin B =r and cos B = s. B What is sin C – cos C? O A. r+s O B. r-s O C. s-r O D. r
Use the information and diagram to answer the following question. Mariela is standing in a building and looking out of a window at a tree. The tree is 20 feet away from Mariela. Mariela's line of sight to the top of the tree creates a 42° angle of elevation, and her line of sight to the base of the tree creates a 31° angle of depression. 420 - 20 ft 31° What is the height, in feet, of the tree? O A. 18 ft O B. 24 ft O C. 30 ft O D. 56 ft
Transcribed Image Text:Use the information and diagram to answer the following question. Mariela is standing in a building and looking out of a window at a tree. The tree is 20 feet away from Mariela. Mariela's line of sight to the top of the tree creates a 42° angle of elevation, and her line of sight to the base of the tree creates a 31° angle of depression. 420 - 20 ft 31° What is the height, in feet, of the tree? O A. 18 ft O B. 24 ft O C. 30 ft O D. 56 ft
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