What is the exact value of sin(345º)?

Step-by-step explanation:

Assuming we're in degrees, we have

sin(345) = sin(300 + 45)and using sin(A + B) = sinAcosB + sinBcosA, we have

sin300cos45 + sin45cos300 =

(-√3/2)(1/√2) + (1/√2)(1/2) =

-√3/ (2√2) + 1/(2√2) =

[ 1 - √3 ] / (2√2) and rationalizing the denominator, we have

√2 [ 1 - √3] / 4 =

(√2 - √6) / 4

I hope it's helpful!!

y-1700=200(x+4)

step-by-step explanation:

200(x+4) is 200x + 800 she is saving 200 per week x is the weeks and the -1700 is. us that’s howmuch she already had

the answer is c)8

step-by-step explanaction: