Three fifths of twelve is 7.2
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The mass of steel marble is 1320 gram and of glass marble is 888 gram.
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Step-by-step explanation:

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Step-by-step explanation:
<u><em>The correct question is</em></u>
Suppose that ∅ Is an angle with csc(∅)=-12/5 and ∅ Is not in the third quadrant. Compute the exact value of Tan(∅).
∅ Is not in the third quadrant
If csc(∅) is negative the angle lie in the III Quadrant or in the IV Quadrant
∅ Is not in the third quadrant ----> given problem
so
That means ----> ∅ Is in the fourth quadrant
step 1
Find the value of 
we have

we know that

therefore

step 2
Find the value of 
we know that

we have

substitute




---> is positive (IV Quadrant)
step 3
Find the value of 
we know that

substitute the values
