Verify the identity.1 + sec2 x sin2 x = sec2 x
What will be an ideal response?
1 + sec2 x sin2 x = 1 + 
= 1 + tan2 x = sec2 x.
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Find the flux of the vector field F across the surface S in the indicated direction.F = xi + yj + z3k; S is portion of the cone z = 2
between z = 2 and z = 4; direction is outward
A. 
?
B. - 
C. - 
?
D. 
?
Solve.The radius of a sphere with surface area S is given by the expression 
.a) Simplify the expression.b) Find the radius of a beach ball if its surface area is 288 in.2. Express the answer in radical form.
A. a) 
; b) 
in.
B. a) 
; b) 
in.
C. a) 
; b) 
in.
D. a) 
; b) 
in.
Solve the problem.The circumference of a circle is given by C = 2?r, where r is the radius. Find the circumference if ? = 3.14 and 
A. 21.98 feet B. 6 feet C. 118.32 feet D. 18.84 feet
Multiply. Write the answer in simplest form.- 
? 350a2
A. - 
B. 180a2
C. -210a
D. - 