If x=p sec teta+q tan teta and y =p tan teta +q sec teta ,then prove that x square - y square =psquare -q square
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Step-by-step explanation:
a song for you
When 2 vowels go walking,
the first one does the talking.
In boat, you hear the O, and not the A.
In meat, you hear the E,
the A sits
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