If A+B+C=90°
A+B+C=90° then
sin2A+sin2B+sin2C=?
a)cosA.cosB.cosC
b)2cosA.cosB.cosC
c)3cosA.cosB.cosC
d)4cosA.cosB.cosC
plz answer this question plz
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cann't understand
plz explain clearly
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