Answer and Step-by-step explanation:
These two terms (pronounced as Sine and Cosine) are used to solve for the sides and angles of a triangle in Trigonometry.
They are functions revealing the shape of a right triangle.
Sine is a trigonometric function of an angle. The sine of an acute angle is defined in the context of a right triangle: for the specified angle, it is the ratio of the length of the side that is opposite that angle, to the length of the longest side of the triangle.
Cosine is also a trigonometric function of an angle. The cosine of an angle is the relation of the length of the side that is adjacent that angle, to the length of the longest side of the triangle.
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Answer:
c = 7, d = 4/
Step-by-step explanation:
The first triangle is a 45-45-90 triangle, meaning the two sides adjacent to the right angle are equal to the same value, while the side opposite the right angle is equal to one of the other sides times .
The second triangle is a 30-60-90 triangle, meaning the side opposite the 30 degree angle is equal to x, the side opposite the 60 degree angle is equal to x, and the side opposite the right angle is equal to 2x. Since the side opposite the 60 degree angle is 4, we know that x times is equal to 4. Therefore, x is 4/. The side opposite the 90 degree angle is 2x, and therefore, 8/.
(-4, 2), (-1, 2), and (-4, 0
Is it 32 x 1/5?? Then the answer is 6.4
Answer:
The fourth choice is the correct one.
Step-by-step explanation:
If the count of negative signs is even, the product is even (positive).
This does not apply to the first choice; this expression is odd.
Same for the second choice.
Same for the third choice. The expression is odd.
The fourth choice is POSITIVE because there are an even number (2) of negative signs.