TyeM200519idn
Answered

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PLEASE HELP (100 POINTS)

PLEASE HELP 100 POINTS class=

Sagot :

[tex]\\ \rm\Rrightarrow 2sin^2x=1-cosx[/tex]

[tex]\\ \rm\Rrightarrow 2sin^2x=1-1+sin^2x[/tex]

[tex]\\ \rm\Rrightarrow 2sin^2x-sin^2x=0[/tex]

[tex]\\ \rm\Rrightarrow sin^2x=0[/tex]

[tex]\\ \rm\Rrightarrow sinx=0[/tex]

[tex]\\ \rm\Rrightarrow x\in n\pi[/tex]

Answer:

I have done this questions before, the answer is C

Step-by-step explanation:

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