Hello! i hope this since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.
Answer from: Quest
c.
step-by-step explanation:
substitution for (0,1)
y=x^2+4x+1
1=0^2+4(x)0+1
1=0+4(x)0+1
1=4(x)0+1
1=0+1
1=1
substitution for (-3,-2)
y=x+1
-2=-3+1
-2=-2
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