Which point on the unit circle corresponds to −4π/3 ? (1/2, −3√/2) (-3√/2, 1/2) (-1/2, 3√/2) (3√/2, −1/2)

Step-by-step explanation:

We know that coordinate of any point on unit circle is given by

Given that

So we just need to plug the value of given angle into above formula:

Hence choice (3) is correct.

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500

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