HI Can u guys help me in this question

Question 4 Find all t e [0,71] for which We? _ 7: IR > R2, 70) = (10 - cos 1,4 - sin!) remaining: 3 Marked out of has speed 7' - Enter the points you found in increasing order, beginning in the top entry box. If you run out of points, ender DNE. 10'00 t1 = V Flag question t2 = t3 = t4 = Check