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Given that tan x =, find cos (90 - x)º giving the answer to 4 significant figuresAsked by meee
given that tan x= 3, find cos(90-x) giving the answer to 4 significant figures
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Answered by
oobleck
cos(90-x) = sin(x)
That's what the "co-" means -- sine of the complement
Now draw a right triangle with legs 3 and 1, so that tan(x) = 3
The hypotenuse is √10 so sin(x) = 3/√10
That's what the "co-" means -- sine of the complement
Now draw a right triangle with legs 3 and 1, so that tan(x) = 3
The hypotenuse is √10 so sin(x) = 3/√10