3 years ago

The number in front of the first term of the polynomial

Mathematics

1 answer:

OleMash [197]3 years ago

5 0

Answer:

Coefficient

Step-by-step explanation:

These numbers are the ones in front of the variables in the beginning of an equation also known as coefficients. The numbers all by themselves without variables are constants. The first term is usually the number with the biggest exponent.

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If sin theta = -1/2 and lies in the third quadrant, what is the cos?

never [62]

Sin angle that equals the 1/2 value is the 30 degree on the 1st Quadrant.

The angle of 30 degree on the 3rd Quadrant is equivalent to (formula and circle in the 1st photo) 180 + 30 = 210°.

So theta = 210° (3rd Quadrant) = 30° (1st Quadrant).

$cos \: 30\degree = \sqrt{3} \div 2$

Now just transfer the cos 30° to the 3rd Quadrant and the signal will be negative (as shown in the 2nd photo attached).

$cos \: 210 \degree = - \sqrt{3} \div 2$