MCQ
If `3tan^-1x +cot^-1x = pi`, then xis equal to ______.
- A–1
- ✓1
- C0
- D`1/2`
✓
Answer
Correct option: B.
1
B
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The constraints of an LPP are 7 ≤ x ≤ 12, 8 ≤ y ≤ 13. Determine the vertices of the feasible region formed by them.
For the following combination of logic gates, when all the three inputs are first high and then low, the output 'Y' will respectively be
The electronic configuration of thorium (Z = 90) is ____________.
EAN of Zn in $\left[ Zn \left( NH _3\right)_4\right]^{2+}$ is____________.
→The probability distribution of a random variable X is given below.
| X = k | 0 | 1 | 2 | 3 | 4 |
| P(X = k) | 0.1 | 0.4 | 0.3 | 0.2 | 0 |
The variance of X is ______
Which of the following is TRUE for the temporal lobe?
A boy tosses a fair coin 3 times. If he gets ₹ 2x for x heads then his expected gain equals ₹ ______
Between which type of flowers geitonogamy is found?
A normal man marries a female carrier for sickle cell anemia. What are the chances of having carrier children?
A pendulum has length of 0.4 m and maximum speed 4 m/s. When the length makes an angle 30° with the horizontal, its speed will be ______.
$\left[\sin \frac{\pi}{6}=\cos \frac{\pi}{3}=0.5\right.$ and $\left.g =10 m / s ^2\right]$
→$\left[\sin \frac{\pi}{6}=\cos \frac{\pi}{3}=0.5\right.$ and $\left.g =10 m / s ^2\right]$