If ais a unit vector and (x−a)x+a˙=24, then write the value of ∣x∣

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If {{a}}is a unit vector and {({{x}}-{{a}})}{{{{x}}+{{a}}}}={2

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If $a$ is a unit vector and $(x - a) \dot{x + a} = 24$ , then write the value of $∣ x ∣$

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a

is a unit vector and

(x - a) \dot{x + a} = 24

, then write the value of

∣ x ∣

7 mins ago

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Practice questions from similar books

Question 1

a, b, c

are three vectors such that

∣ a ∣ = 5, ∣ ∣ b ∣ ∣ = 12

and

∣ c ∣ = 13,

and

a + b + c = O,

find the value of

a \dot{b} + b \dot{c} + \cdot a

View solution

Question 2

Let

\overset{a}{^} = 2 \hat{i} + \hat{j} - 2 \hat{k}

and

b = \hat{i} + \hat{j}

. Let

c

be a vector such that

∣ c - a ∣ = 3, ∣ ∣ (a \times b) \times c ∣ ∣ = 3

and the angle between

c

and

a \times b

30^{0}

. Then

a \dot{c}

is equal to :

5

(2)

\frac{1}{8}

(3)

\frac{25}{8}

(4)

2

View solution

Question 3

Let x, y and z be three vectors each of magnitude V2 tion on and the angle between each pair of them is E. If a is a let non-zero vector perpendicular to x and yx z and b is a non-zero tor perpendicular to y and z x x, then 1.

View solution

Question 4

In a

Δ A B C, ∠ A + ∠ B = 120^{\circ}, a = 3 + 1, b = 3 - 1

, then the ratio of

∠ A

∠ B

is (a)

7 : 1

(b)

5 : 1

(c)

3 : 1

(d)

5 : 3

View solution

Question Text

a

is a unit vector and

(x - a) \dot{x + a} = 24

, then write the value of

∣ x ∣

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If ais a unit vector and (x−a)x+a˙​=24, then write the value of ∣x∣

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Practice questions from similar books

If $a$ is a unit vector and $(x - a) \dot{x + a} = 24$ , then write the value of $∣ x ∣$