12. Suppose that tan (a) =-3 and -<α<2π. 2 Find: (a) sin(2a) (b) cos(2a)
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°.
Related questions
Question
please answer this WITHOUT A CALCULATOR! there is only ONE ANSWER! the answer choices are on the first image
Transcribed Image Text:9.
Problem 6.2.12 a and b
sin(2a) =
–3-/10
Vi0
cos (2a) =
А.
5
5
sin (2a) = 3
4
cos (2a) =
В.
С.
3
sin(2a):
4
cos (2a) = -
5
5
sin(2a) = 3V10
D.
cos (2a) = 2v10
%3D
-3
4
sin(2a) =
cos (2a) =
Е.
F. None of the above
Transcribed Image Text:3n <a<27 .
12. Suppose that tan(a) =-3 and
2
Find:
(a) sin( 2a)
(b) cos(2a)
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