can you please explain me this step..its urgent..how does tan alpha changed to cos alpha
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by the Pythagoras Theorem we know that the square of hypotenuse is equal to the square of the base + the square of the perpendicular we know perpendicular is 12 base is 5 and hypotenuse is 13 so tangent of Alpha would be 12 by 5 and cosine of Alpha would be 12 by 13 it's just buy the formula engine is equal to perpendicular ÷ base and cosine is equal to best divided by hypotenuse
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