Key in the trigonometry answer

Exercise and reference answers

Questions

1. Answer

   45

   Question

   A tower casts a shadow equal to its own height. What is the angle of elevation in degrees?

2. Answer

   30

   Question

   From a point 30 m away, a tower subtends 45 degrees. How tall is the tower in metres?

3. Answer

   1

   Question

   What is the value of tan 45 degrees?

4. Answer

   10

   Question

   A ladder makes 60 degrees with the ground and its foot is 5 m from the wall. How long is the ladder in metres?

Instructions

Work out each answer and key it in on the pad.

Explanation