Answered

If cos x = sin(20 + x) and 0° < x < 90°, the value of xis

Answer :

TRANVANHUYEN2020GO

Answer:

x= 35

Step-by-step explanation:

Cos x = Sin( 20+x)

 Sin ( 90 – x) = Sin(20+x)

 90 – x = 20+x  

 2x = 70  

 x = 35  

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