Trigonometry

Hong Kong

Stage 1 - Stage 3

A man standing at point $C$`C`, is looking at the top of a tree at point $A$`A`. Identify the angle of elevation in the figure given.

$\alpha$`α`

A

$\theta$`θ`

B

$\sigma$`σ`

C

Easy

Less than a minute

A man standing at the top of the tower at point $B$`B`, is looking at the ground at point $C$`C`. Identify the angle of depression in the figure given.

Considering the diagram below, find $x$`x`, the angle of elevation to point $A$`A` from point $C$`C`.

Round your answer to two decimal places.

Sally measures the angle of elevation to the top of a tree from a point $20$20m away to be $43^\circ$43°. If the height of the tree is $h$`h` m, find the value of $h$`h`.

Round your answer to the nearest whole number.

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