sin- 33°+ sin 123°- cos(-10°)· sin 80° (4) tan (-150°) cos² 800°

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.3: Trigonometric Functions Of Real Numbers
Problem 43E
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Please help me with question 4
)= COS(180 – 8). Cos(-8)
A).cos(A-180°)
- cos(-A)
use of a calculator:
sin 160°- cos 250°
((2)
sin 330°.cos(-290°)
sin? 33°+ sin 123°- cos(-10°) · sin 80°
(4)
2
tan (-150°) cos 800°
Transcribed Image Text:)= COS(180 – 8). Cos(-8) A).cos(A-180°) - cos(-A) use of a calculator: sin 160°- cos 250° ((2) sin 330°.cos(-290°) sin? 33°+ sin 123°- cos(-10°) · sin 80° (4) 2 tan (-150°) cos 800°
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