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OpenStudy (anonymous):
Which of the following expressions has a value of 1? sin2 x + cos2 x sin x + cos x (sin x + cos x)2 sin2 x – cos2 x
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OpenStudy (anonymous):
Sin2 x + cos2 x
OpenStudy (anonymous):
@rizwan_uet Could u explain how u got it?
OpenStudy (anonymous):
yes its a trigonometric identity that Sin2 x + cos2 x
OpenStudy (anonymous):
=1
OpenStudy (anonymous):
thank you!
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OpenStudy (anonymous):
welcome
OpenStudy (anonymous):
do you need its proof???
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