Express all trignometric ratios in terms of cos
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cos x
sin x = √(1 – cos² x)
tan x = sin x/cos x = (√(1 – cos² x))/cos x
cot x = cos x/sin x = cos x/√(1 – cos² x)
sec x = 1/cos x
csc x = 1/sin x = 1/√(1 – cos² x)
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Acos(x) + B sin(x) = (√(A^2 + B^2))cos(x - tan^-1(B/A)) cos(x) - sin (x) = (√2)cos(x + π/4)
sin x = √(1 – cos² x)
tan x = sin x/cos x = (√(1 – cos² x))/cos x
cot x = cos x/sin x = cos x/√(1 – cos² x)
sec x = 1/cos x
csc x = 1/sin x = 1/√(1 – cos² x)
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Acos(x) + B sin(x) = (√(A^2 + B^2))cos(x - tan^-1(B/A)) cos(x) - sin (x) = (√2)cos(x + π/4)
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cos theta
0 degree= 1
30 degree=root3 /4
45 degree= 1/root 2
60 degree= 1/4
90 degree= 0
I hope this will help you
0 degree= 1
30 degree=root3 /4
45 degree= 1/root 2
60 degree= 1/4
90 degree= 0
I hope this will help you
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