1. Prove the following identities: (a) secx – cos x = tan x sin x (b) sin(x + y) sin(x – y) = sin? x – sin? y

Calculus: Early Transcendentals
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ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
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Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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1. Prove the following identities:
(а) sec x
cos x = tan x sin x
(b) sin(x + y) sin(x – y) = sin² x – sin? y
Transcribed Image Text:1. Prove the following identities: (а) sec x cos x = tan x sin x (b) sin(x + y) sin(x – y) = sin² x – sin? y
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