Question

Answer all the questo
1. Find the value of cos50°cos40° - sin50°sin40°
2. Find the value of 4cos 15° - 3cos15°
sinh1
3. Evaluate: lim
4. State the Napier's formula
5. If y = 5x3 + 2x2 + 3x – 2, find dy
6. If y = sin (log x). find
dy
dx
PART-B​

Answer 1

Answer:

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