Consider the following trigonometric expressions: 1. sin(2π+x)
2. sin(-2π+x)
3. sin(-x)
4. -sin(x)

If sinx=A, which of the above expressions is not equal to A for all values of x.

1) 3 and 4
2) 1
3) 2
4) 4
5) 1,2,3,4
6) 1 and 2
7) 1,2,3
8) 3

b

step-by-step explanation:

b

the anwser is d) 75°

step-by-step explanation:

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

x equals 1

step-by-step explanation:

f(4)=f(×)

x=1