Answer:
A)4.6 yard
Step-by-step explanation:
![x^{2} +10^{2} =11^{2} \\x^{2} =21\\x=\sqrt[2]{21} \\](https://tex.z-dn.net/?f=x%5E%7B2%7D%20%2B10%5E%7B2%7D%20%3D11%5E%7B2%7D%20%5C%5Cx%5E%7B2%7D%20%3D21%5C%5Cx%3D%5Csqrt%5B2%5D%7B21%7D%20%5C%5C)
x≅4.6
Hoped I helped, have a nice day!
Answer:
to know and understand my lesson
Answer:
1.425.
Step-by-step explanation:
1 .425 is the only one which can be written as a fraction ( 1425/ 1000).
π is a non repeating decimal which goes on without bounds.
So is √50 (try entering it on your calculator).
√-4 : there is no real number whose square root is negative.
Answer:
√10 / 10
Step-by-step explanation:
tan θ > 0 and sin θ < 0, so θ is in quadrant III. That means cos θ < 0.
cos(θ + π/4)
Use angle sum formula.
cos θ cos(π/4) − sin θ sin(π/4)
½√2 cos θ − ½√2 sin θ
Factor.
½√2 cos θ (1 − tan θ)
½√2 cos θ (1 − 2)
-½√2 cos θ
Write in terms of secant.
-½√2 / sec θ
Use Pythagorean identity (remember that cos θ < 0).
-½√2 / -√(1 + tan²θ)
-½√2 / -√(1 + 2²)
½√2 / √5
√10 / 10
