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Sindrei [870]
3 years ago
10

Find the exact value of each expression.

Mathematics
1 answer:
Mazyrski [523]3 years ago
3 0
In evaluating the following expression in 1, we can use a calculator shifted to degrees mode and applying trigonometric identities 
<span> sin 50° cos 40° + sin 40° cos 50° = sin (40+50) = sin 90 =1
</span>
2. <span>(tan pi/3 + tan pi/6) / (1- tan pi/3 tan pi/6) = tan (pi/3-pi/6) = tan pi/6 = 0.5774</span>
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