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Posted by on Wednesday, January 16, 2013 at 2:01pm.

A ladder 20m long rest against a vertical wall so that the foot of the ladder is 9m long. Find correct to the nearest degree the angle that the ladder makes with the wall.

  • Physics - , Wednesday, January 16, 2013 at 4:01pm

    sinα =9/20 =0.45
    α=sin⁻¹0.45 =26.7⁰

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