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Which expression equals 1? a. sin(x) + cos(x) b. sin^2(x) + cos^2(x) c. sin^2(x) - cos^2(x) d. sin(x) - cos(x)
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1 vote
Which expression equals 1?

a. sin(x) + cos(x)
b. sin^2(x) + cos^2(x)
c. sin^2(x) - cos^2(x)
d. sin(x) - cos(x)

User CSolanaM
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1 Answer

3 votes
b. sin^2 (x) + cos^2 (x)
User Ahoffer
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