cos 2 pi 4 x sin 2 pi 4 x sin2x Best answer Let us consider the LHS cos2 4 x sin2 4 x As we know cos2 A sin2 A cos 2A Therefore cos2 4 x sin2 4 x cos 2 4 x cos
Use inverse trigonometric functions to find the solutions and check for extraneous solutions A basic trigonometric equation has the form sin x a cos x a tan x a cot x a The Get a step ahead with your homework cos 2 pi 4 Compute answers using Wolfram s breakthrough technology knowledgebase relied on by millions of students professionals
cos 2 pi 4 x sin 2 pi 4 x sin2x
cos 2 pi 4 x sin 2 pi 4 x sin2x
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Please see below cos pi 2 x sinx Now cos pi 2 x cos2 pi 4 x 2 hence sinx 2cos 2 pi 4 x 2 1 or 1 sinx 2cos 2 pi 4 x 2 1 Answer Somebody N Apr 8 2018 See below Explanation Identity cos A B cosAcosB sinAsinB RH S 2cos 4 x 2 cos 4 cos x sin 4 sin x cos 4 2 2 sin
Sin 2 cos Now let us take our problem cos 2x 2sin x 4 cos x 4 Let us start with the Right Hand side 2sin x 4 cos x 4 sin 2 x 4 double Exact Form 2 Decimal Form 1 41421356 Free math problem solver answers your algebra geometry trigonometry calculus and statistics homework questions with step by step
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The general solution for cos 2x sin x pi 4 is x pi 4 pin x 2pin 11pi 12 x 2pin 19pi 12 Sin x sin x cos cos x sin a shifted sine is a linear combination of a sine and a cosine For specific values of the shift one of the terms vanishes For example sin x 2 cos x For 4 the terms get the
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cos 2 pi 4 x sin 2 pi 4 x sin2x - Using the formula sin x y as mentioned here See for first line we know cos 4 and sin 4 is equal to 1 2 So the expression reduces to 2sin x 4 2 sinx 2