3 years ago

Verify that cos squared A plus Sin squared A is equal to 1 if A is equal to 90 degrees

Mathematics

1 answer:

Scilla [17]3 years ago

3 0

Answer:

see explanation

Step-by-step explanation:

To verify cos²A + sin²A = 1 with A = 90° , then

cos²90° + sin²90°

= (0)² + (1)²

= 0 + 1

= 1

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