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Maths-

General

Easy

Question

$open square brackets table row 1 cell negative tan invisible function application alpha divided by 2 end cell row cell tan invisible function application alpha divided by 2 end cell 1 end table close square brackets$ $open square brackets table row cell tan invisible function application alpha divided by 2 end cell 1 row 1 0 end table close square brackets$ equals-

zero matrix
sec² $α$ .I2
I₂
None of these

The correct answer is: None of these

To find the value of $open square brackets table row 1 cell negative tan invisible function application alpha divided by 2 end cell row cell tan invisible function application alpha divided by 2 end cell 1 end table close square brackets$ $open square brackets table row cell tan invisible function application alpha divided by 2 end cell 1 row 1 0 end table close square brackets$ .
$open square brackets table row 1 cell negative tan invisible function application alpha divided by 2 end cell row cell tan invisible function application alpha divided by 2 end cell 1 end table close square brackets$ x $open square brackets table row cell tan invisible function application alpha divided by 2 end cell 1 row 1 0 end table close square brackets$ = $open square brackets table row cell tan open parentheses alpha over 2 close parentheses end cell 1 row cell tan open parentheses open parentheses alpha over 2 close parentheses squared close parentheses end cell cell tan open parentheses alpha over 2 close parentheses end cell end table close square brackets$ .

Therefore, none of the given options is correct.

Related Questions to study

Statement - I For any real value of $theta not equal to left parenthesis 2 n plus 1 right parenthesis pi$ or $left parenthesis 2 straight n plus 1 right parenthesis pi divided by 2 comma straight n element of straight I$ the value of the expression $straight y equals fraction numerator cos squared begin display style space end style theta minus 1 over denominator cos squared begin display style space end style theta plus cos space theta end fraction text is end text straight y less or equal than$ 0 or y≥2 (either less than or equal to zero or greater than or equal to two)
Statement - II $sec space theta element of left parenthesis negative straight infinity comma negative 1 right square bracket union left square bracket 1 comma straight infinity right parenthesis$ for all real values of $theta$ .

Statement - I For any real value of $theta not equal to left parenthesis 2 n plus 1 right parenthesis pi$ or $left parenthesis 2 straight n plus 1 right parenthesis pi divided by 2 comma straight n element of straight I$ the value of the expression $straight y equals fraction numerator cos squared begin display style space end style theta minus 1 over denominator cos squared begin display style space end style theta plus cos space theta end fraction text is end text straight y less or equal than$ 0 or y≥2 (either less than or equal to zero or greater than or equal to two)
Statement - II $sec space theta element of left parenthesis negative straight infinity comma negative 1 right square bracket union left square bracket 1 comma straight infinity right parenthesis$ for all real values of $theta$ .

If A = $open square brackets table row cell cos invisible function application alpha end cell cell sin invisible function application alpha end cell row cell negative sin invisible function application alpha end cell cell cos invisible function application alpha end cell end table close square brackets$ , then A² equals-

If A = $open square brackets table row cell cos invisible function application alpha end cell cell sin invisible function application alpha end cell row cell negative sin invisible function application alpha end cell cell cos invisible function application alpha end cell end table close square brackets$ , then A² equals-

The root of the equation [x 1 2] $open square brackets table attributes columnalign left left left columnspacing 1em end attributes row cell 0 1 1 end cell row cell 1 0 1 end cell row cell 1 1 0 end cell end table close square brackets$ $open square brackets table row x row cell negative 1 end cell row 1 end table close square brackets$ = 0 is-

The root of the equation [x 1 2] $open square brackets table attributes columnalign left left left columnspacing 1em end attributes row cell 0 1 1 end cell row cell 1 0 1 end cell row cell 1 1 0 end cell end table close square brackets$ $open square brackets table row x row cell negative 1 end cell row 1 end table close square brackets$ = 0 is-

parallel

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If A and B are matrices of order m × n and n × n respectively, then which of the following are defined-

If A and B are matrices of order m × n and n × n respectively, then which of the following are defined-

the products (A) and (B) are:

the products (A) and (B) are:

chemistry-General

parallel

A matrix A = (aij) m x n is said to be a square matrix if-

A matrix A = (aij) m x n is said to be a square matrix if-

For any square matrix A = [aij], aij = 0, when i $not equal to$ j, then A is-

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parallel

(A) and (B) are:

(A) and (B) are:

chemistry-General

A = $open square brackets table row 1 2 2 row 2 1 2 row 2 2 1 end table close square brackets$ , then A³ – 4A² – 6A is equal to -

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parallel

If A = $open square brackets table row 2 cell – 1 end cell row cell – 1 end cell 2 end table close square brackets$ and A² – 4A – n I = 0, then n is equal to

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The value of x for which the matrix product $open square brackets table attributes columnalign center center center columnspacing 1em end attributes row 2 0 7 row 0 1 0 row 1 cell negative 2 end cell 1 end table close square brackets$ $open square brackets table row cell – x end cell cell 14 x end cell cell 7 x end cell row 0 1 0 row x cell – 4 x end cell cell – 2 x end cell end table close square brackets$ equal an identity matrix is :

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parallel

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