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21 February, 15:56

A helicopter is traveling at 86.0 km/h at an angle of 35° to the ground. What is the value of Ax? Round your answer to the nearest tenth. km/h

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  1. 21 February, 16:25
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    Answer: 70.5 km/h

    Justification:

    The question is not clearly stated but it seems you are asking for the x - component of the velocity of the helicopter.

    You can find the x and y - components of the velocity using the trigonometric ratios sine and cosine.

    The sine ratio relates the y-component and the velocity by:

    sin (angle) = y-component of velocity / velocity

    The cosine ratio related the x-component and the velocity by:

    cos (angle) = x-component of velocity / velocity.

    Since you have the angle and the velocity and are asked by the x-component of the velocity, you need to use the cosine ratio:

    cos (35°) = x-component / 86.0 km/h

    => x - component = 86.0 km/h * cos (35°) = 70.5 km/h
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