Answer: Ф = 20
Step-by-step explanation:
sin2Ф = cos (Ф+ 30 )
if sinα = cosβ , then α and β are complementary ,that is they add up to be 
.
Therefore : 2Ф + Ф + 30 = 90
3Ф + 30 = 90
3Ф = 90 - 30
3Ф = 60
Ф = 20
It’s 1+5+11+3= 20 and that’s the answer of the number
Answer:
it's potential energy decreases
Just do your work and pay attention in class!!!!
Answer:
-1/8
Step-by-step explanation:
9-5(4-2)
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3+5
First do the parentheses
9-5(2)
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3+5
Then calculate the top and bottom of the fraction
We need to multiply and divide first
9-10
--------------
3+5
-1
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8
