Question

If cosO + sinO = 2 cosO, then cosO – sinO = ?

(A) 2 tanO
(B) 2 sinO

(C) √2
/cosO+ sinO

(D) none of these

O is denoted as theta.​

Answer 1

cosO + sinO =2cosO

sinO= 2cosO-cosO

sinO = cosO

sinO-cosO = 0

D) none of these

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