Question 14 0/1 pt 0 3 99 0 Details Use the sum and difference identities to find the exact value. You may have need of the quotient, reciprocal or even even/odd identities as well. sec 12 = Question Help: @Video Message instructor Submit Question Question 15 0/1 pt 0 3 99 0 Details Find the EXACT value of cos ( arctan 5 - arctan 12 Assume A and B are Quadrant I angles in standard position. cos arctan - arctan 12 Question Help: Message instructor Submit