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# The angle of elevation of an aircraft from a point K on the horizontal ground 30...

### Question

The angle of elevation of an aircraft from a point K on the horizontal ground 30$$\alpha$$. If the aircraft is 800m above the ground, how far is it from K?

A) 400.00m

B) 692.82m

C) 923.76m

D) 1,600.99m

### Explanation:

In $$\bigtriangleup$$KBC, sin 30 = $$\frac{800}{IKCI}$$

IKCL = $$\frac{800}{sin30^o}$$

= $$\frac{800}{0.5}$$

= 1600m

## Dicussion (1)

• In $$\bigtriangleup$$KBC, sin 30 = $$\frac{800}{IKCI}$$

IKCL = $$\frac{800}{sin30^o}$$

= $$\frac{800}{0.5}$$

= 1600m