10 maths EX 8.3 sum no 4
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if tanA=cotB
tanA=tan(90-A)
A=90-A
2A=90
A=45°
and tanB = tan(90-A)
=tan(90-45)
therefore b is also45
a+b=90
45+45=90
hence prooved hope you like it!nn
tanA=tan(90-A)
A=90-A
2A=90
A=45°
and tanB = tan(90-A)
=tan(90-45)
therefore b is also45
a+b=90
45+45=90
hence prooved hope you like it!nn
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