Ask Question
28 August, 00:25

In the following questions, simplify the given formulae:

2. sin50°cos 40° - cos50°sin 40°

3. cos75°cos 15° - sin75°sin 15°

+1
Answers (1)
  1. 28 August, 00:39
    0
    Step-by-step explanation:

    sin (A - B) = sin A cos B - cos A sin B

    sin50°cos 40° - cos50°sin 40°

    = sin (50-40) °

    =sin10°

    cos (A + B) = cos A cos B - sin A sin B

    cos75°cos 15° - sin75°sin 15°

    = cos (75+15) ° = cos90° = 0
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “In the following questions, simplify the given formulae: 2. sin50°cos 40° - cos50°sin 40° 3. cos75°cos 15° - sin75°sin 15° ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers