●■●■No. 57 please■●■●
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1 + cos + cos^2 .....
its GP
Sum = 1)/ 1 - cosx
= 1/2 sin^2 x/2
Now 16^ ( 1/( 2 sin^2 x/2) = 16^2
compare
1/(2 sin^2 x/2) = 2
2 sin^2 x/2 = 1/2
sin^2 x/2 = 1/4
sin x/2 = +-1/2
x/2 = 30
x= 60
its GP
Sum = 1)/ 1 - cosx
= 1/2 sin^2 x/2
Now 16^ ( 1/( 2 sin^2 x/2) = 16^2
compare
1/(2 sin^2 x/2) = 2
2 sin^2 x/2 = 1/2
sin^2 x/2 = 1/4
sin x/2 = +-1/2
x/2 = 30
x= 60
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2
Please see the attachment
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Zaransha:
can you both please try to answer the next question I've asked?
what is that?
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