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Luden [163]
3 years ago
14

A counterexample for the expression sin y tan y= cos y is 0.

Mathematics
2 answers:
DiKsa [7]3 years ago
5 0

Answer:true

Step-by-step explanation:

edge

umka21 [38]3 years ago
3 0

Answer:

True

Step-by-step explanation:

To answer this question we must evaluate

y = 0° on both sides of the equation.

For the left side we have:

sin(0\°) tan(0\°)

We know that tan(0\°) =\frac{sin(0\°)}{cos(0\°)}

We know that cos(0\°) = 1 and sin(0\°) = 0.

Therefore tan(0\°) = 0.

Then the left-hand side of the equals is equal to zero.

On the right side we have:

cos(y)

When evaluating cos(y) at y = 0

We have to cos(0\°) = 1.

0 ≠ 1

The equation is not satisfied. Therefore y = 0 ° is a counterexample to the equation

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