Guest

Prove that 5cosx + 3cos (x+ 60) +3 lies between -4 and 10.

Prove that 5cosx + 3cos (x+ 60) +3 lies between -4 and 10.

Grade:10

1 Answers

Kaustubh
20 Points
5 years ago
5cosx+3cos(x+60)+35cosx+3(cosx.cos60-sinxsin60)+35cosx+3(cosx/2-3^1/2 /2sinx) +313/2cos-.........Using trigo formula for max and min-(A+b)1/2

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free