Question

Do help me with this question ....
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Answer 1

Answer:

i) sinA

= perpendicular/ hypotenuse

=BC/AC

ii) sec A

= hypotenuse/ base

= AC/ AB

III)

cos^2 A +sina^2A

= (base/hypotenuse)^2+(perpendicular/hypotenuse)^2

= b^2+p^2/h^2. it's denominator is same

=h^2/h^2

=1