If sin(2x + 7) = cos(4x - 7)º, what is the value of x?
1 answer:
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Answer:
A and E are correct option.
Step-by-step explanation:
We are given two triangle congruent.
If two triangles are congruent then their corresponding sides and angles are equal.
In ΔTUV ≅ ΔWXY
Now we write all the congruent sides and angles
- ∠T=∠W
- ∠U=∠X
- ∠V=∠Y
- TU≅WX
- UV≅XY
- TV≅WY
Now we see all the given option.
∠Y=∠V (TRUE, Congruent part of congruence triangles)
∠W=∠T (TRUE, Congruent part of congruence triangles)
Thus, A and E are correct option.
Answer:
f(x) = 4 when x is 8
Step-by-step explanation:
Domain is the set of x values that make the function defined. Allowed x values for the function (mapping).
The Range is the set of y values that make the function defined. Allowed y values for the function (mapping).
- Whenever we need to find f(a), suppose, then we look for "a" in the domain and see its corresponding value mapping in the range.
- Whenever we will be given a value for f(x) = a, suppose, and we have to find "x", we look at the value a in the range and find corresponding x value in the domain.
Firstly, we need f(4), so we look for "4" in domain and see which number it corresponds to in range.
That is
Thus,
Next,
We want "x" value that gives us a "y" value of 4. We look for "4" in the range and see which value it corresponds to. That is "8". So,
f(8) = 4