(ii) Prove the identity (2 - 2 cos 0)(sin 0 + sin 20 + sin 30) -(cos 40 - 1) sin 0 + sin 40 (cos 0 – 1).
(ii) Prove the identity (2 - 2 cos 0)(sin 0 + sin 20 + sin 30) -(cos 40 - 1) sin 0 + sin 40 (cos 0 – 1).
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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Question
plz solve both parts within 30-40 mins I'll upvote your answer
Transcribed Image Text:(ii) Prove the identity
(2 – 2 cos 0) (sin 0 + sin 20 + sin 30)
= -(cos 40 - 1) sin 0 + sin 40 (cos 0 – 1).
(iii)Find the roots of f (x) = x' – 15x – 4 using the trigonometric formula.
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