the surface area of a sphere is found using the formula SA=4πr^2 where r is the radius. if the surface area of a sphere is 144π
2 answers:
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Answer:
D
Step-by-step explanation:
=
=
and
=
=
=
Hence expression D is equivalent
Answer:
sin (2A+2B) = 0
Step-by-step explanation:
Given that,
cosec A= -2 and sec B= -2, A and B lie in the same quadrant.
We need to find the value of sin (2A+2B).
And
To find the value of sin (2A+2B) as follows :
sin [2(-30)+2(120)] = sin (-60+240)
=sin (180)
= 0
So, the value of sin (2A+2B) is qual to 0.