Answer:
70x + 100
Step-by-step explanation:
Trust me on this one
t0 = π/4
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
Can I have the brainliest please?