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janicemaxwell123
19.10.2020 •
Mathematics
Given a right triangle with sin θ = 8/11
Cos θ=?
Tan θ=?
sec θ=?
csc θ=?
cot θ=?
Solved
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Ответ:
answer:
1/9
step-by-step explanation:
to answer this, we "complete the square."
start with x^2+x.
1. identify the coefficient of the x term; it is 1.
2. halve this result, obtaining 1/2, and then square the latter: (1/2)² = 1/4
3. add 1/4 to, and then subtract 1/4 from, the original x^2+x:
x^2+x + 1/4 - 1/4 this is exactly equivalent to x^2+x.
4. strictly speaking, the answer to this problem is 1/4, since adding 1/4 to
x^2+x makes x^2+x into a perfect square.