how to prove Pythagoras the by trigonometry???
please help asap
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The usual proof of the identity cos2t+sin2t=1 uses the Pythagorean Theorem. So a proof of the Pythagorean Theorem by using the identity is not correct.
True, we can define cosine and sine purely "analytically," by power series, or as the solutions of a certain differential equation. Then we can prove cos2t+sin2t=1 without any appeal to geometry.
But we still need geometry to link these "analytically" defined functions to sides of right-angled triangles.
GEETANSH02163:
yes i googled it,,,,,,,,,,i knew that there is no identity to prove Pythagoras the by trigonometry,,,,,,,i was just not knowing that how to explain it to u
so i just wanted to explain it to u
if I proved OT using trigonometry
it*
I can prove it
as i told you that it would be wrong
still I can prove it using
sin²A +cos²A = 1
identity
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