Question

If cosA=12/13,than find sinA and tanA

Answer 1

Answer:

perpendicular=p

base=b

hypotenuse=h

cos A=12/13= b/h

by Pythagoras theorem,

h²=p²+b²

13²=p²+12²

p²=169-144

p²=25

p=5

sinA=p/h=5/13

tanA=p/b=5/12

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