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e identity: cos 3x = 4 cos x-3 X So

e identity: cos 3x = 4 cos x-3 X So

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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000 Samsung Triple Camera Shot with my Galaxy A50 reflex AOT-a 20 T(-1;-2) Determine, without using a calculator, the value of each of the following: 5.1.1 tan a 5.1.2 cos a 5.1.3 cos(a +45°) in simplest form 5.2 Determine, without using a calculator, the value of the following expression: 2 sin(-20°).sin 160°- cos 40° 5.3 Consider: 3 cos x.sin x + tan x.cos (180° - x) 5.3.1 Simplify the expression to a single trigonometric ratio. 5.3.2 Hence, write down the range of: f(x) = 3 cos x.sin x+ tan x.cos (180°-x) cos 3x = 4 cosx-3 5.4 Prove the identity: Determine the general solution of x in the following equation: 5.5 2 tan x3 lan +1 = 54
Transcribed Image Text:000 Samsung Triple Camera Shot with my Galaxy A50 reflex AOT-a 20 T(-1;-2) Determine, without using a calculator, the value of each of the following: 5.1.1 tan a 5.1.2 cos a 5.1.3 cos(a +45°) in simplest form 5.2 Determine, without using a calculator, the value of the following expression: 2 sin(-20°).sin 160°- cos 40° 5.3 Consider: 3 cos x.sin x + tan x.cos (180° - x) 5.3.1 Simplify the expression to a single trigonometric ratio. 5.3.2 Hence, write down the range of: f(x) = 3 cos x.sin x+ tan x.cos (180°-x) cos 3x = 4 cosx-3 5.4 Prove the identity: Determine the general solution of x in the following equation: 5.5 2 tan x3 lan +1 = 54
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