pnewma161 pnewma161

02-09-2019
Mathematics

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30 points for trig help!!!! question below

30 points for trig help question below class=

Respuesta :

smayra1191 smayra1191

02-09-2019

Answer:

For theta = 0 , π , 2π , 7π/6 and 11π/6

this equation holds !!

Step-by-step explanation:

[ Refer to the attached file ]

Used Formula :-

* Cos2x = 1 - 2sin²x

* Sinx is zero for x = nπ

* Sinx is negative in 3rd and 4th quadrant !!

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