Anyone want to join my zoo-m to cure my boredness

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

If the line in the graph is shifted up two units which is the equation of the new line

Rose and andrew are financing $128,000 to purchase a condominium. they obtained a 15-year, fixed-rate loan with a rate of 5.05%. they have been given the option of purchasing up to four points to lower their rate to 4.81%. how much will the four points cost them?