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If (costheta)/(1+sintheta)+(coshtheta)/...

If `(costheta)/(1+sintheta)+(coshtheta)/(1-sintheta)=4andtheta` is acute , then what is the value (in degrees) of `theta` ?

A

30

B

45

C

60

D

90

Text Solution

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The correct Answer is:
C
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