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The number of roots of the equation, (81)

^{sin2x}+ (81)^{cos2x}= 30 in the interval [ 0, $$\pi$$ ] is equal to :2

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All possible values of $$\theta$$ $$\in$$ [0, 2$$\pi$$] for which sin 2$$\theta$$ + tan 2$$\theta$$ > 0 lie in :

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If [x] denotes the greatest integer $$ \le $$ x, then the system of linear equations [sin $$\theta $$]x + [–cos$$\theta $$]y = 0, [cot$$\theta $$]x + y = 0

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Let S be the set of all $$\alpha $$ $$ \in $$ R such that the equation, cos2x + $$\alpha $$sinx = 2$$\alpha $$– 7 has a solution. Then S is equal to :

Questions Asked from Trigonometric Equations (MCQ (Single Correct Answer))

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