સદિશ i-2 j+3 k ની દિક્કોસાઇન શોધો. - Vidyadip

MCQ

સદિશ $\hat{i}-2 \hat{j}+3 \hat{k}$ ની દિક્કોસાઇન શોધો.

A
$\frac{1}{14}, \frac{2}{14}, \frac{3}{14}$
B
$\frac{-1}{\sqrt{14}}, \frac{-2}{\sqrt{14}}, \frac{-3}{\sqrt{14}}$
✓
$\frac{1}{\sqrt{14}}, \frac{-2}{\sqrt{14}}, \frac{3}{\sqrt{14}}$
D
1, -2, 3

✓

Answer

Correct option: C.

$\frac{1}{\sqrt{14}}, \frac{-2}{\sqrt{14}}, \frac{3}{\sqrt{14}}$

(C)

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "MCQ" from JUNE 2024→JUNE 2024 — all question types→ગણિત ધોરણ 12 સાયન્સ question papers→Gujarat Board ધોરણ 12 સાયન્સ question papers→Gujarat Board question paper generator→

Similar questions

સમીકરણ $sin^{-1}\ 2x = cos^{-1}\ x$ ના બધાજ ઉકેલનો સરવાળો મેળવો.

ધારોકે $\Delta$ એ પ્રદેશ $\left\{(x, y) \in R ^2: x^2+y^2 \leq 21, y^2 \leq 4 x, x \geq 1\right\}$ નું ક્ષેત્રફળ છે. તો $\frac{1}{2}\left(\Delta-21 \sin ^{-1} \frac{2}{\sqrt{7}}\right)=................$

જો $\overrightarrow a = \left( {\hat i + \hat j + \hat k} \right),\overrightarrow a .\overrightarrow b = 1$ અને $\overrightarrow a \times \overrightarrow b = \hat j - \hat k$ તો $\overrightarrow b = \ .............$

જો $A= \{1, 2, 3, 4\}$ અને સંબંધ $R : A \to A$ ; $R = \{ (1, 1), (2, 3), (3, 4), ( 4, 2) \}$ આપેલ હોય તો આપેલ પૈકી સત્ય વિધાન મેળવો.

જો $R \rightarrow R$ માટે વિધેય $f(x) = {(x + 1)^2}, g(x) = {x^2} + 1$, તો $\text{(fog)}( - 3) =\ .. ......$

Two fair dice, each with faces numbered $1,2,3,4,5$ and $6$ , are rolled together and the sum of the numbers on the faces is observed. This process is repeated till the sum is either a prime number or a perfect square. Suppose the sum turns out to be a perfect square before it turns out to be a prime number. If $p$ is the probability that this perfect square is an odd number, then the value of $14 p$ is. . . . .

${d \over {dx}}\{ {(\sin x)^{\log x}}\} = $

${\cot ^{ - 1}}3 + {\rm{cose}}{{\rm{c}}^{ - 1}}\sqrt 5 =$

પરવલયો $y = 2x^2$ અને $y = x^2 + 4$ વડે ઘેરાતું સામાન્ય ક્ષેત્રફળ $.....$ છે.

$\sec ^2\left(\tan ^{-1} 2\right)+\operatorname{cosec}^2\left(\cot ^{-1} 2\right)=\ .......... $