sec 2A=cosec(A-27^@) ಆದಾಗ 2A ಒಂದು ಲಘು ಕೋ...

`sec 2A=cosec(A-27^@)` ಆದಾಗ 2A ಒಂದು ಲಘು ಕೋನವಾಗಿದ್ದು `/_A` ಯ ಅಳತೆಯು:

A

`35^@`

B

`37^@`

C

`39^@`

D

`21^@`

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