JEE MATHEMATICS MCQ: SET THEORY

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Application +4 | -1

Let

S=\left\{\theta \in[0,2 \pi]: 2 \cos ^2 \theta+3 \sin \theta=0\right\}

then number of elements of

S

View answer and explanation

Correct option: A

Option A (2) is correct because solving the trigonometric equation

2 \cos^2 \theta + 3 \sin \theta = 0

in the interval

[0, 2\pi]

yields two solutions.

More Questions from SET THEORY

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S

2 a_1 a_2 a_3 \ldots . . a_{2006}

a_1, a_2, a_3, \ldots ., a_{2006}

S

a N=\{a n: n \in N: b N=\{n b: n \in N\}

c N=\{c N: n \in N\}

b N \cap c N=d N

a, b, c \in N

b, c

A=\{x: x

\}

B=\{x: x

A-B

F(n)

n

[\mathrm{F}(20) \cap \mathrm{F}(16)] \subseteq \mathrm{F}(\mathrm{y})

40 \%

A, 20 \%

10 \%

C

A

C

4 \%

A

C

2 \%

A