Post a New Question


posted by .

If sin A=3/5 and cosB = 24/25 and angle A and angle B are both in quandrant 1. What is sthe exact value of cos (A-B)?

  • Trigonometry -

    cos (A-B) = cosA cosB - sinA sinB

    Note that cosA = 4/5 and sin B = 7/25, which you can prove using
    cos^2 x + sin^2 x = 1

  • Trigonometry -


Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

More Related Questions

Post a New Question