Eighteen could be in standard form 18 or expanded form 10 + 8.
Answer:
-1/2
Step-by-step explanation:
Im not going to go into detail about how to compute sin30 and cos 30, but know that sine and cosine are just the ratios between the sides of a 30-60-90 triangle with a hypothenuse of 1.
With that being said:
sin^2 30 - cos^2 30
= (1/2)^2 - ((sqrt3)/2)^2
= 1/4 - 3/4
= -1/2
Answer:
I think it might be A: 75< x<84
Step-by-step explanation:
but i am not sure
Answer:
Step-by-step explanation:
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