Use the sum of angles's trigonometric identity formula:
cos(A+B)=(cosAcosB-sinAsinB)
x+y=4cos(t+π/6)+2sint=4(cost*cosπ/6-sint*sinπ/6)+2sint
recall that cosπ//6=√3/2, and sinπ/6=1/2:
4(cost*cosπ/6-sint*sinπ/6)+2sint=4[(√3/2)cost-(1/2)sint]+2sint
simplify:2√3cost-2sint+2sint=2√3cost
Answer:
212
Step-by-step explanation:
I hope this helps you!
Answer:
replace x with -4
f(-4)= 4(-4) + 2
4(-4) + 2 = -16 + 2 = -14
Answer:
5.5x+7.146 (the six is repeating)
Step-by-step explanation:
Answer:
Step-by-step explanation:
<u>Volume of the cone:</u>
<u>Substitute values and solve for r:</u>
- 12π = 1/2πr²(4)
- r² = 9
- x = √9
- r = 3 ft
