The equation which represents the change in elevation of the mountain climber as he descends the cliff is; c = -2.5s.
<h3>What is the change in elevation c of the climber in terms of seconds?</h3>
It follows from the task content that the change in elevation of the climber is to.be represented by c and since the rate of descending the cliff is given as; 2.5 ft/second.
Therefore, the required equation is; c = -2.5s.
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Answer:
Step-by-step explanation:
I'm going to use a Pythagorean identity to help make this make sense.

We are given that cos(0) = 1, so
cos²θ = 1² which simplifies to
cos²θ = 1. So filling into our trig identity:
sin²θ + 1 = 1 and
sin²θ = 0 then
sinθ = √0 so
sinθ = 0
so
sin(0) = 0