1
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

If the unit vectors $\mathbf{a}$ and $\mathbf{b}$ are inclined at $2 \theta$ and $|\mathbf{a}-\mathbf{b}|<1$, then if $0<\theta<\pi, \theta$ lies in the interval.

A
$\left(\frac{5 \pi}{6}, \pi\right]$
B
$\left[0, \frac{\pi}{6}\right]$
C
$\left[\frac{\pi}{6}, \frac{\pi}{2}\right]$
D
$\left(\frac{\pi}{2}, \frac{5 \pi}{6}\right]$
2
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

If the coefficients of $x^7$ and $x^8$ in the expansion of $\left[2+\frac{x}{3}\right]^n$ are equal, then value of $n$ is

A
15
B
45
C
55
D
56
3
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

In a triangle $A B C$ as shown in the diagram, where $A B=5, A C=10$ and $B D=1$, then perimeter of $\triangle A B C$ is

VITEEE 2024 Mathematics - Properties of Triangles Question 1 English

A
9
B
18
C
20
D
30
4
VITEEE 2024
MCQ (Single Correct Answer)
+1
-0

Given, $\frac{x^2+y^2}{x^2-y^2}+\frac{x^2-y^2}{x^2+y^2}=k$, then $\frac{x^8+y^8}{x^8-y^8}$ is equal to

A
$\frac{k^2+1}{k^2-1}$
B
$\frac{k^2+4}{k^2-4}$
C
$\frac{k^2+4}{4 k}$
D
$\frac{k^2+8}{8 k}$
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