6. tan 165° = Sin

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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How do I find the appropiate angles to use to use in the sum/difference equation for number 6? I was told tan of 165 is equal to -tan 15 but I dont understand why?

4. tan (A - B) = tantan B
It tan A tan B
4+2 lo hushsup od (5) bus (3+) mnt (d) (+a) me (s) bid'f
2
Mynbaum
Find the exact value of each expression. (Do not use a calculator.)
5. sin 255°
6. tan 165°
= Sin
S
Sin (210+45)
Sin 210 cos 45° + cos 210 sin 45
087
thie has
Transcribed Image Text:4. tan (A - B) = tantan B It tan A tan B 4+2 lo hushsup od (5) bus (3+) mnt (d) (+a) me (s) bid'f 2 Mynbaum Find the exact value of each expression. (Do not use a calculator.) 5. sin 255° 6. tan 165° = Sin S Sin (210+45) Sin 210 cos 45° + cos 210 sin 45 087 thie has
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