Sin∅ = BC/AC = cos( 90 - ∅ ) and cos∅ = AB/AC = sin( 90 - ∅ ) so option (A) and (F) will be correct.
<h3>What is a trigonometric function?</h3>
The fundamental 6 functions of trigonometry have a range of numbers as their result and a domain input value that is the angle of a right triangle.
It will be possible to comprehend the graphs, domains, differentiation, and integration of the four quadrants' trigonometric functions.
Sinx = perp./hypo.
Cosx = base/hypo.
So,
Sin∅= BC/AC
cos( 90 - ∅ ) = BC/AC
So,
Sin∅ = BC/AC = cos( 90 - ∅ )
And,
cos∅ = AB/AC
sin( 90 - ∅ ) = AB/AC
So,
cos∅ = AB/AC = sin( 90 - ∅ )
Hence the expression Sin∅ = BC/AC = cos( 90 - ∅ ) and cos∅ = AB/AC = sin( 90 - ∅ ).
For more information about the trigonometric function
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