Mechanical/potential Engergy work / speed help

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To find Tarzan's speed at the bottom of the swing, the conservation of mechanical energy principle is essential. For part (a), starting from rest, potential energy at the starting height converts to kinetic energy at the lowest point, allowing calculation of speed using the height derived from the vine length and angle. In part (b), the initial speed adds to the kinetic energy, requiring adjustments in calculations to account for both potential and initial kinetic energy. The key is applying the work-energy theorem and understanding energy conversion in the swing dynamics. Properly utilizing these concepts will yield the desired speeds for both scenarios.
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Alright I need a little help. It's finding the speed of something using mechanical energy, work or power.

The question is
Tarzan swings on a 28.4 m long vine initially inclined at an angle of 37° from the vertical.

(a) What is his speed at the bottom of the swing if he starts from rest?

Ok I am bascily already stuck here. It only gives 3 variables. I know that he initiall has 0 velocity because he is starting from rest. I have an angle and a distance. I don't know what to do here. my guess is something to do with the work formula since it gives distance but yeah any help?

(b) What is his speed at the bottom of the swing if he starts with an initial speed of 2.72 m/s?

Same goes for this one
 
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HINT: Consider conservation of energy.
 
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