what is the value of (cos ^2 67° - sin ^2 23°)?
Anonymous:
It's 0
ans - zero
Yeah
It's 0
Can we take (sin - cos ) as common
And then solve it
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here is ur answer......
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cos^2 67° - sin^2 23°
cos^2(90 -23) - sin^2 23°
sin^2 23° - sin^2 23°
= 0
cos^2(90 -23) - sin^2 23°
sin^2 23° - sin^2 23°
= 0
thnks for making as brainlist
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