Direction Of T 9C3De4
1. **Problem statement:** Ram starts at entrance E at the northernmost point of a circle with radius 50m.
He walks 1/4 of the circle clockwise, then cuts across the circle to point P on the opposite side such that EP passes through the center.
From P, he walks tangentially 30m to point T.
We need to find the direction of T from E.
2. **Understanding the problem:**
- The circle radius $r=50$ m.
- 1/4 of the circle corresponds to an arc length of $\frac{1}{4} \times 2\pi r = \frac{1}{4} \times 2\pi \times 50 = 25\pi$ m.
- Walking 1/4 circle clockwise from the northmost point E means moving 90° clockwise along the circle.
3. **Coordinates setup:**
Place the center of the circle at origin $O(0,0)$.
- Entrance $E$ is at the northmost point: $E(0,50)$.
- After walking 1/4 circle clockwise, Ram reaches point $Q$ at 90° clockwise from north, which is the eastmost point: $Q(50,0)$.
4. **Point P:**
P is on the opposite side of the circle such that $EP$ passes through the center.
Since $E$ is at $(0,50)$, the opposite point $P$ is at $(0,-50)$.
5. **From P, Ram walks tangentially 30m to T:**
- The tangent at $P(0,-50)$ is horizontal because the radius vector $OP$ is vertical.
- The tangent direction at $P$ is along the x-axis.
- Ram can walk either left or right along the tangent.
6. **Finding T coordinates:**
- Walking 30m tangentially from $P(0,-50)$:
- To the right: $T(30,-50)$
- To the left: $T(-30,-50)$
7. **Direction of T from E:**
- Vector $\overrightarrow{ET} = T - E$.
- For $T(30,-50)$: $\overrightarrow{ET} = (30 - 0, -50 - 50) = (30, -100)$.
- For $T(-30,-50)$: $\overrightarrow{ET} = (-30 - 0, -50 - 50) = (-30, -100)$.
8. **Calculate angles:**
- Angle $\theta = \arctan\left(\frac{\Delta y}{\Delta x}\right)$ from east axis.
- For $(30,-100)$: $\theta = \arctan\left(\frac{-100}{30}\right) \approx -73.3^\circ$ (measured clockwise from east).
- For $(-30,-100)$: $\theta = \arctan\left(\frac{-100}{-30}\right) = \arctan(3.33) \approx 73.3^\circ$ but in the third quadrant, so angle from east is $180 - 73.3 = 106.7^\circ$.
9. **Convert to compass directions:**
- $-73.3^\circ$ from east is $73.3^\circ$ south of east (southeast direction).
- $106.7^\circ$ from east is $16.7^\circ$ south of west (southwest direction).
10. **Which direction is correct?**
- Ram walked clockwise along the circle, so the tangent direction at P is towards the east (right) side.
- Therefore, $T$ is at $(30,-50)$.
**Final answer:**
Point $T$ is approximately in the southeast direction from $E$.