8. For optimal stability, a ladder should always be placed to make an angle of 75° with the ground. How far from the bas

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8 For Optimal Stability A Ladder Should Always Be Placed To Make An Angle Of 75 With The Ground How Far From The Bas 1 (25.67 KiB) Viewed 6 times

8. For optimal stability, a ladder should always be placed to make an angle of 75° with the ground. How far from the base of a building should you position a 2.5 metre ladder in order to achieve this 75 angle? (Give your answer in either metres to two decimal places, or to the nearest centimetre.) 3 mark 9. A wire stretches from a point half way up a 30 metre radio antenna to a point on the ground creating a 45° angle between the wire and the ground. Find the length of the wire to two decimal places. 10. A carpenter has a triangular piece of plywood, a scientific calculator, but doesn't have a protractor. She measures side 1 to be 1.2 metres, side 2 to be 1.5 metres and side 3 to be 2.0 metres. What should she calculate for the angle between side 1 and side 2? 3 marks 40. He walks 11. Pat measures the angle of elevation to the top of a tree t 30 metres toward the tree and then measures the angle of elevation to be 50 How high is the tree? Round your answer to the nearest tenth