please answer all of them, it's urgent!

Find an equation of the tangent line to the curve y = 3sin(4:) at the point (0, 1) Note: Write the exact answer but not the approximate value. Write In for natural logarithm not log_e or log Answer: The equation of the tangent line is y = max + b where m = and Find the point on the curve y = a3/ 2 for which the tangent line to the curve is perpendicular to the line 16x + 135y + 422 = 0 Note: Write the exact answer but not the approximate value (For example write # but not 0.8). Answer: The point is (x, y) where For what values of r E [0, 27] does the graph of y = x + 2 cos I have a horizontal tangent? Note Write the exact answer but not the approximate value (For example write # but not 0.8). Your answer should be written in terms of Pi or pi or n if there is a or in the answer. Answer. The smaller value of r is The larger value of r is For what value of a does the tangent line to the curve y = 9 + 2e - 4x is parallel to the line 10x - 10y = 2? Note: Write the exact answer but not the approximate value (For example write - but not 0.8) Also write In ( ? ) not Ing or log_e ( ; )