Prove that -

thankyou ~

Explanation:

In the right triangle shown in the attachment, we have, by definition, ...

  sin(θ) = a/c

  cos(θ) = b/c

Then ...

  sin²(θ) +cos²(θ) = (a/c)² +(b/c)² = (a² +b²)/c²

By the Pythagorean theorem, ...

  c² = a² +b²

Substituting for c², we have ...

  sin²(θ) +cos²(θ) = (a² +b²)/(a² +b²)

  sin²(θ) +cos²(θ) = 1

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Additional comment

This trig identity also goes by the name "Pythagorean identity."

what is a pre-existing condition claus?

means if you're already damaged some way when you take out a medical insurance you will not get full compensation for that injury that you already have.

113.1

step-by-step explanation:

v=4

3πr3=4

3·π·33≈113.09734