Simplify to a single trigonomeiric ratio: cos(90°-x).cos(-y)- cos(180°-x)sin(-y). cos(360° -x).cos((y-360°)+sin(540° + x).cos(90° + y)
Simplify to a single trigonomeiric ratio: cos(90°-x).cos(-y)- cos(180°-x)sin(-y). cos(360° -x).cos((y-360°)+sin(540° + x).cos(90° + y)
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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![5.6
Simplify to a single trigonomeiric ratio:
cos(90°-x).cos(-y)-cos(180°-x)sin(-y).
cos(360° – x).cos(y-360°)+sin(540° +x).cos(90° +y)
5.7
If cos x 2sin y cos y, 0°<y 90°, show that x+2y= 90°
Show that the equation
càn be written as
4sin?x + 9cosx-6=0
4cos2x-9cosx+2 0
5.8
Hence solve, for 0 <x< 680° 4sin2x + 9casx-6 0](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd9221e55-5d32-4d14-ac99-68cfcfbd84b0%2Fe35afb9b-6b75-45a5-aca9-1ba7ebb44750%2Fb1fr364_processed.jpeg&w=3840&q=75)
Transcribed Image Text:5.6
Simplify to a single trigonomeiric ratio:
cos(90°-x).cos(-y)-cos(180°-x)sin(-y).
cos(360° – x).cos(y-360°)+sin(540° +x).cos(90° +y)
5.7
If cos x 2sin y cos y, 0°<y 90°, show that x+2y= 90°
Show that the equation
càn be written as
4sin?x + 9cosx-6=0
4cos2x-9cosx+2 0
5.8
Hence solve, for 0 <x< 680° 4sin2x + 9casx-6 0
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