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Grade: 12

In a question, an inclined surface is inclined at arcsin 1/3 to the horizontal surface. What does this arcsin 1/3 means? 

10 years ago

Answers : (4)

AskIITians Expert PRASAD IIT Kharagpur
18 Points


arcsin = angle

Let, @ = arcsin(1/3)

@ = angle between hypotenuse and the horizontal surface.

Then sin @ = 1/3

As sin @ = opposite side / hypotenuse

we have hypotenuse is thrice the length of the side opposite angle @.

10 years ago
Ramesh V
70 Points

  An abbreviation for inverse sine.
 arsin(x) or arcsin(x) means the inverse sine of x, i.e. the number whose sine is x.
 Occasionally asin(x) is used to mean the same thing.


here its sin-1(1/3)

10 years ago
AskIITians Expert Hari Shankar IITD
17 Points

arcsin is sin inverse.

theta = arcsin(1/3) means sin(theta) = 1/3

10 years ago
Sameer Satyam
8 Points

Just another way to write sine inverse.......


10 years ago
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