If tan A =2/3 prove that Sin^2A+ cos^2A=1
Answers
Answered by
1
Answer:
sin
2
A+cos
2
A=1
LHS=sin
2
A+cos
2
A
=(
hypotenuse
opposite
)
2
+(
hypotenuse
adjacent
)
2
=
AC
2
BC
2
+
AC
2
AB
2
=
AC
2
BC
2
+AB
2
=
AC
2
AC
2
[By pythagoras theorem]
=1
=RHS
Step-by-step explanation:
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