
Let K be the kite and the string is tied to point P on the ground.
In ∆KLP,
\(\frac{KL}{KP} = sin60°\)
\(\frac{60}{ KP} = \frac{\sqrt3}2\)
\(KP = \frac{120}{\sqrt3} = 40\sqrt3 \,m\)
Hence, the length of the string is \(40\sqrt3 \,m\).
The shadow of a tower on level ground is $30\ \text{m}$ longer when the sun's altitude is $30^\circ$ than when it is $60^\circ$. Find the height of the tower. (Use $\sqrt{3}=1.732$.)
| Class | 0 – 15 | 15 – 30 | 30 – 45 | 45 – 60 | 60 – 75 | 75 – 90 |
|---|---|---|---|---|---|---|
| Frequency | 11 | 8 | 15 | 7 | 10 | 9 |
Leaves of the sensitive plant move very quickly in response to ‘touch’. How is this stimulus of touch communicated and explain how the movement takes place?
Read the following sources of loan carefully and choose the correct option related to formal sources of credit:
(i) Commercial Bank
(ii) Landlords
(iii) Government
(iv) Money Lende