Use the trigonometric subtraction formula for sine to verify this identity:
cos((π / 2)...
Mathematics, 28.01.2020 10:31 miamassimino
Use the trigonometric subtraction formula for sine to verify this identity:
cos((π / 2) – x) = sin x
answer format:
calculation:
1.
2.
reason:
1. -this follows from the difference formula for cosine
2. -this follows by evaluating at π / 2
this proves the identity:
-
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