Use the sum and difference identities to find the exact value of…

Question Answered step-by-step Use the sum and difference identities to find the exact value of… Use the sum and difference identities to find the exact value of each trigonometric function. 1)  cos 165o              2)  tan 15o   3)  sin ?/12   4)  cos 7?/12  For #’s 5-8, assume A and B are in Quadrant I.5)  Suppose sin A = 4/5 and sin B = 5/13. Find the exact value of cos (A + B).   6)  Suppose sin A = 4/5 and sin B = 5/13. Find the exact value of sin (A – B).   7)  Suppose cos A = 3/5 and sin B = 5/13. Find the exact value of sin (A + B).   8)  Suppose cos A = 3/5 and sin B = 5/13. Find the exact value of cos (A – B).   Verify that each equation is an identity. 9)  cos (60o + ?) = sin (300 – ?)   10)  cos (180o + ?) = -cos ? Math Trigonometry TRIG ONLINE Share QuestionEmailCopy link Comments (0)