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Deepak

· started a discussion

· 1 Months ago

can anyone explain it . (Question: 316082.0 )

from the 4th step ..

Question:

If  sin θ= -4/5   and θ is in third quadrant, then  cos  θ/2     equals to –

Options:
A)

15    

B)

-15    

C)

25    

D)

-25    

Solution:

Ans: (b)

  

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