Question

cos (40+x)2 = sin 30°. Find x.
cos (40+x)? = sin 30°
:: cos (40+x)2 =
:: cos (40+x) =
:. 40 + x =
... X=
​

Answer 1

Answer:

$40 + x = sin30 \\ sin30 = 1 \div 2 \\ 40 + x = 1 \div 2 \\ x = 1 \div 2 - 40 \\ x = 0.5 - 40 \\ x = - 39.5$

Step-by-step explanation:

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