Asked by Anonymous
Please help me with this question.
A 7 metre ladder rests against a wall and makes an angle of 30° with the ground. How far up the wall does the ladder reach?
A 7 metre ladder rests against a wall and makes an angle of 30° with the ground. How far up the wall does the ladder reach?
Answers
Answered by
mathhelper
You must learn and memorize the 3 basic trig ratios in terms of
opposites, adjacents, and hypotenuse
you are given the hypotenuse and the base angle, have to find the opposite
trig ratio involving opposite and hypotenuse is sine
sin30° = opposite/7
opposite = 7sin30 = 3.5 m
opposites, adjacents, and hypotenuse
you are given the hypotenuse and the base angle, have to find the opposite
trig ratio involving opposite and hypotenuse is sine
sin30° = opposite/7
opposite = 7sin30 = 3.5 m
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