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Kindly elaborate on each step.  Especially: How does (sintheta-1)2 become 1-sintheta?

Kindly elaborate on each step.  Especially: How does (sintheta-1)2 become 1-sintheta?

Trigonometry (11th Edition)
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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Kindly elaborate on each step. 

Especially: How does (sintheta-1)2 become 1-sintheta?

to prove !- レ |- Sino |- fin'o I+ fino ta te le lt hand side (L·H.s) (Bino-1)" L-H.S レ (-I(1 - sino))" in numerator Common -) and i" - sin'o (1-Sin@) - Sin' O (1-sine) (1-sinó) / -' azb'= (a+b) (a-b) (i+rino) (1-tige) ab b"= (a+b) (ab a'= a.a I-sino ニ I+sino (-H. S (Right hand ) R.H.S Side Thus (Sino-1) | - Sino I+sino Answer
Transcribed Image Text:to prove !- レ |- Sino |- fin'o I+ fino ta te le lt hand side (L·H.s) (Bino-1)" L-H.S レ (-I(1 - sino))" in numerator Common -) and i" - sin'o (1-Sin@) - Sin' O (1-sine) (1-sinó) / -' azb'= (a+b) (a-b) (i+rino) (1-tige) ab b"= (a+b) (ab a'= a.a I-sino ニ I+sino (-H. S (Right hand ) R.H.S Side Thus (Sino-1) | - Sino I+sino Answer
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