SOLUTION: the expression sin^2(0)-4+cos^2(0) is eqquivalent to: a)-5 b)-4 c)-3 d)3 e)5

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Question 434108: the expression sin^2(0)-4+cos^2(0) is eqquivalent to:
a)-5
b)-4
c)-3
d)3
e)5
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Note that sin^2 (0) + cos^2 (0) = 1 (regardless if the argument is 0 or theta). Hence, the expression is equal to 1 - 4 = -3.