SOLUTION: Find the exact value of the expression without a calculator.
{{{sin^2(40 degrees) + cos^2(40 degrees)}}}
Algebra.Com
Question 1133725: Find the exact value of the expression without a calculator.
Answer by greenestamps(13200) (Show Source): You can put this solution on YOUR website!
for ANY value of x.
It's the basic trigonometric identity. You will be using it frequently -- learn it!
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