Mathematics - Trigonometric Equation Question with Solution | TestHub

MathematicsTrigonometric EquationTrigonometric EquationHard3 minQB

MathematicsHardmultiple choice

For integer $n$ , when does $cos 2 x + 1 + sin 2 x = 2 sin x + cos x$ hold?

Answer:

A, B, C

Solution:

One branch gives $sin x + cos x = 0$ , equivalently $x = nπ - π /4$ ; the other gives $cos x = 1$ , hence $x = 2 nπ$ .

Stream:JEESubject:MathematicsTopic:Trigonometric EquationSubtopic:Trigonometric Equation

⏱ 3mℹ️ Source: QB

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