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3
Answer:
tan=perpendicular/base
thus,
here:
perpendicular=3
base=4
by applying Pythagoras theorem:
3^2 + 4^2= hypotenuse(H)^2
9+16=H^2
25=H^2
H=5..
so sinA=3/5
cosA=4/5
B=90-A
so,
since sinA=cos(90-A)
and cosA=sin(90-A)
therefore 3/5=cosB
and 4/5=sinB
since tanX=sinX/cosX..
tanB=sinB/cosB
tanB=(4/5)/(3/5)
=4/3
cotB=1/tanB=3/4
so,
cotB=3/4
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Answered by
1
Answer:
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