Question

Dave builds a wheelchair ramp with 1 metre of wood.
He wants the vertical height of the ramp to be 50 centimetres.
What does the angle of elevation need to be?

Answer 1

Answer:

A

/|

/ |

100cm / | 50 cm

/ |

/__|

B. C

sinB=50/100

sinB = 1/2

now

we know,

sin30°=1/2

therefore B=30°

angle pf elevation = 30°

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