3 years ago

Review the proof of the identity cos(π − A) = −cosA.

Mathematics

2 answers:

Annette [7]3 years ago

6 0

Answer:

error in step 1

Step-by-step explanation:

well where is does the step not make sense?

remember cos(pi) = -1 and sin(pi)=0

that means step 1 is strange... it didn't distribute properly

it should have been:

cos(pi) - cos(A)

hope that helps! ^-^

Anestetic [448]3 years ago

5 0

Answer: Step 1 on EDGE2020

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