2 years ago

Please help cos40∘=sin(x+30∘)

Mathematics

2 answers:

iVinArrow [24]2 years ago

5 0

Answer:

x = 20 degrees.

Step-by-step explanation:

cos40∘=sin(x+30∘)

sin (x + 30) = 0.766

x + 30 = arcsin 0.766 = 50

x = 50 - 30 = 20.

Troyanec [42]2 years ago

3 0

Answer:

x = 20

Step-by-step explanation:

cos(angle) = sin(complement of angle) , then

cos40 = sin(90 - 40) = sin50 , then

sin(x + 30) = sin50 , that is

x + 30 = 50 ( subtract 30 from both sides )

x = 20

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»»————-　★　————-««

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»»————-　★　————-««

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⸻⸻⸻⸻

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Please help cos40∘=sin(x+30∘)​

Please help cos40∘=sin(x+30∘)