Verify the Pythagorean Identity 1 + cos^2(theta) = csc^2(theta)
1 + cot² t = csc² t
\(1+cot ^{2} t = \frac{1}{sin ^{2} t} \\ 1+ \frac{cos^{2}t }{sin^{2}t } = \frac{1}{sin ^{2} t}\) / * sin² t
sin² t + cos² t = 1
1 = 1
We have confirmed the identity.
The verification for the Pythagorean identity 1 + cot²∅ = cosec²∅ will lead to sin²∅ + cos²∅ = 1
1 + cot²∅ = cosec²∅
Therefore,
cosec²∅ = 1 / sin²∅
cot²∅ = 1 / tan²∅ = cos²∅ / sin²∅
Hence,
1 + cos²∅ / sin²∅ = 1 / sin²∅
Therefore, multiply both sides by sin²∅
1(sin²∅) + (sin²∅) cos²∅ / sin²∅ = (sin²∅) 1 / sin²∅
sin²∅ + cos²∅ = 1
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