if tan=5/12 and sin is negative ; find the valu of cos
mayankpathak77777:
tan-perpandicular/base hince. by pythagores ..find hypertenua is 13. then cos -base /hyprttrnuse
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sin is negative and tan is positive so it means that angle is in third quadrant
So cos = 12/√(12^2+5^2)
=-12/13
So cos = 12/√(12^2+5^2)
=-12/13
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