This table shows a proportional relationship between x and y. Find the constant of proportionality (r). Using the value for r, e
1 answer:
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Answer:
see explanation
Step-by-step explanation:
Consider the left side
A +
A - 2cos²Asin²A ← is the expansion of
= (cos²A - sin²A)²
Substitute sin²A = 1 - cos²A
= (cos²A - (1 - cos²A) )²
= (cos²A - 1 + cos²A)²
= (2cos²A - 1 )²
= right side , then proven
The answer you want is going to be A.
Hope it helps.
