I just want some basics steps on solving this problem. (My frs have already solved most of the problem so if you can check and verify if it's right.) I don't need explanation

Calculator Active when needed. Radian mode. Give exact answers when possible. Evaluate. Give exact answers when possible: 1) sin -1/ Im 3) cot-1 (-2.4 ) = sin' 3 tan ( 2.4) 0.523 = 0.643 - 0:395 4) arccos(-0.312)= 5) cot ( sin-1(-0.592)) = cos (- 0.312) cot ( - 0.633 ) = 1.888 = - 1 362 6) Astronomers have noticed that the number of visible sunspots varies sinusoidally from a minimum of about 10 to a maximum of about 110. A maximum occurred in third year and there are 5 years between each high and low. Write an equation to model the number of sunspots with respect to time, t, which represents the number of years 110+ y= so sin ( 5 x + 3) +so 50- B = 8TT to YOS + m 7) State the range of y = csc-1(x) + [ O, 3 ) U (2,TT 8) State the domain of y = -4 tan(2nx) x = &