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Andrews [41]
2 years ago
11

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]2 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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Step-by-step explanation:

Hello,

The first thing you do is set up your equation, and we are solving for x so we are going to get x by itself on one side of the = sign.

       2x/3+1=3        First thing: subtract 1 from BOTH sides.

               -1  -1

----------------------

          2x/3=2       Multipliy by 3 on both sides

              *3 *3

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            2x=6         Divide by 2 on both sides

             /2 /2

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I hope this helped you!!!

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