Suppose that sin(a) = 2/8 and cos(b) =1/8 define in the first quadrant, determine cos(a+b). (round to 4 decimal places)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.2: Trigonometric Functions Of Angles
Problem 95E
Question
Suppose that sin(a) = 2/8 and cos(b) =1/8 define in the first quadrant, determine
cos(a+b). (round to 4 decimal places)
Transcribed Image Text:Suppose that sin(a) = 2/8 and cos(b) =1/8 define in the first quadrant, determine cos(a+b). (round to 4 decimal places)
Suppose that sin(a) = 1/7 and cos(b) = 2/7 define in the first quadrant, determine
cos(a-b). (round to 4 decimal places)
Your Answer:
Transcribed Image Text:Suppose that sin(a) = 1/7 and cos(b) = 2/7 define in the first quadrant, determine cos(a-b). (round to 4 decimal places) Your Answer:
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