Answer:
t0 = π/4
Step-by-step explanation:
The velocity v(t) = r'(t) = <-2sint,-2cost>
Since <1,-1>⊥v, <1,-1>•v=0. So,
(1)(-2sint) + (-1)(-2cost) = 0
cost - sint = 0
<span>△RST is a right triangle because RS¯¯ is perpendicular to RT¯¯ .</span>
Answer:
C. 30°
Step-by-step explanation:
Answer:
1/30
Step-by-step explanation: There are 30 students 19 play instr, 10 play spor,
8 who do both. Their is one student that was left out so the answer is 1/30
14 hours
672 miles / 48 mph = 14 hours total