Can someone please explain how to solve 3x+3=x-1 will give brainiest :)
1 answer:
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Answer:
x = 30°
Step-by-step explanation:
The arcsin (inverse sine) function can be used. Be sure to set your calculator to degrees mode.
sin(x) = 1/2
arcsin(sin(x)) = arcsin(1/2)
x = arcsin(1/2)
x = 30°
The length of the sides,MD, DK, and KM gives the measure of the angle m<D as c) 76°
<h3>Which method can be used to find the measure of angle m<D?</h3>In triangle ∆MDK, we have;
m = 16.4
d = 22
k = 19
Using cosine rule, we get;
d² = m² + k² - 2•m•k•cos(D)
Therefore;
2•m•k•cos(D) = m² + k² - d²
Which gives;
- m<D = 76°
The correct option is therefore;
- c) 76°
Learn more about the rule of cosines here:
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