Can someone explain to me what this means
2 answers:
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Answer:
(B)All right angles are congruent
Step-by-step explanation:
Given that:
The reason for this congruency is that both are right angles and in fact, all right angles are congruent.
Answer:
cos(x-30)=1/2
Step-by-step explanation:
We use the following relationship to obtain cos(x)
From that, we have that cos(x)= sqrt(1-1/4)=sqrt(3) / 4
To obtain the value of cos(x-30), lets remember the following expression:
Therefor, we can use that to obtain our desired function cos(x-30)
cos(x)*cos(30)+sin(x)*sin(30)
=2/4=1/2