MCQ
The point (3, 0, -4) lies on the:
- AY-axis
- BZ-axis
- CXY-plane
- DXZ-plane
Solution:
(3, 0, -4) Given pointClearly, y = 0 and x and z have non-zero value.
If the point lies on x - z plane, this condition is possible. the answer is XZ-plane.
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The value of $\sin\frac{\pi}{18}+\sin\frac{\pi}{9}+\sin\frac{2\pi}{9}+\sin\frac{5\pi}{18}$ is given by:
$\sin\frac{7\pi}{18}+\sin\frac{4\pi}{9}$
$1$
$\cos\frac{\pi}{6}+\cos\frac{3\pi}{7}$
$\cos\frac{\pi}{9}+\sin\frac{\pi}{9}$
Let R be set of points inside a rectangle of sides a and b (a, b > 1) with two sides along the positive direction of x-axis and y-axis. Then