if A and B are complementary angles then sin a . sec b is equal to dash
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hey!
as A and B are complementary
a+b=90
a=90-b
thus
sin a = cos(90-b)
cos b . sec b
cos b×1/cos b
=1
as A and B are complementary
a+b=90
a=90-b
thus
sin a = cos(90-b)
cos b . sec b
cos b×1/cos b
=1
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