Question

11. What is the value of cos 15° + cos 165°?

1) 1
2) 2/1/3 – 1)
3) (73 +1)/V2
4)0​

Answer 1

Answer:

0

Step-by-step explanation:

cos15+cos 165

cos 15+cos (180-15) (cos(180-x)=_cosx)

then ,

cos15-cos15 =0.....

....hope it helps u

Answer 2

your ans is 0

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