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dpaInc
 3 years ago
Best ResponseYou've already chosen the best response.0no. an identity is a statement that is ALWAYS true no matter what x is. Here, if x = 0, the equation sin(0) = (sqrt2)/2 would be false.

SUROJ
 3 years ago
Best ResponseYou've already chosen the best response.2sin^2x+cos^2x=1, like these rules are identities...the values of x can change so the answer is definitely false.

greysmither
 3 years ago
Best ResponseYou've already chosen the best response.0OH! Okay, I get it now. Thanks to both of you :)
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