Genius Jnr - Evaluate (I) (II) (III) cos 48° − sin 42° (IV)cosec 31° − sec 59°

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Evaluate

(I)

(II)

(III) cos 48° − sin 42°

(IV)cosec 31° − sec 59°

1 : 5

5 : 1

25 : 1

1 : 25

or

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