Mathematics, 25.10.2021 16:00 daelinrobinson

Sec^2(135°) / cos(-240°) - 2 sin(930°) pls solve this and tell me what its ans in detailed steps ...
is its ans -1 or it is wrong because my ans is different from textbook solution...

Sec^2(135°) / cos(-240°) - 2 sin(930°)

pls solve this and tell me what its ans in detailed steps

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Sec^2(135°) / cos(-240°) - 2 sin(930°) pls solve this and tell me what its ans in detailed steps ....