b) sin²a - cos²a - tan²a 2 sin ²a - 2 sina - 1 2 1 - sin 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°.
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Please explain the steps in words so I can understand please
b) sin ²a - cos ²a - tan²a
2 sin ²a - 2 sin ¹a - 1
1 - sin ²a
2
L.S. =
sin ²a - cos²a - tan²a
sin ²a
sin ²a
cos²a
-
cos ²α
cos²a x sin²a
cos a
cos²a
cos²a
4a
cos²a X
x
sin ²a - cos ¹a
sin ²a
1 - sin²a
sin ²a x (1 - sin²a)
sin ²a
1
(1 - sin²a) - sin²a
1
sin ²a
sin 4a - (1 - 2 sin ²a + sina)
1 sin ²a
2 sin ²a-2 sin ¹a - 1
1 - sin²a
R.S., where sin a # 1
sin ³0
11
=
-
-
-
sin ² a
cos ²a
Transcribed Image Text:b) sin ²a - cos ²a - tan²a 2 sin ²a - 2 sin ¹a - 1 1 - sin ²a 2 L.S. = sin ²a - cos²a - tan²a sin ²a sin ²a cos²a - cos ²α cos²a x sin²a cos a cos²a cos²a 4a cos²a X x sin ²a - cos ¹a sin ²a 1 - sin²a sin ²a x (1 - sin²a) sin ²a 1 (1 - sin²a) - sin²a 1 sin ²a sin 4a - (1 - 2 sin ²a + sina) 1 sin ²a 2 sin ²a-2 sin ¹a - 1 1 - sin²a R.S., where sin a # 1 sin ³0 11 = - - - sin ² a cos ²a
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