Answer:
cos x ≠ 0 ⇔ x ≠ ; k ∈ N
<=> cos²x + sin²x = 1
⇔ 1 = 1
=> x = { R \ (pi/2 + k.pi); k ∈ N}
Step-by-step explanation:
A mobile auto-detailing company pays you $12.75 an hour. Last summer you worked 35.25 hours a week. What was your total straight
-time pay for two weeks? (Round your answer to the nearest penny.)
.88
.88
2 answers:
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