chriscol4082
22.11.2019 •
Mathematics
Subtracting 3x2 + 4x – 5 from 7x2 + x + 9 results in a polynomial. after subtracting 4x2 – 3x from this polynomial, the difference is:
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Ответ:
, because the cosine and sine are complements
Step-by-step explanation:
Sine and cosine are trigonometric complementary functions. If we are talking about a right triangle we will have the following:
(1)
(2)
Let's prove it:
(3)
(4)
(5)
(6)