Using a trigonometric identity, the cosine of the angle is given as follows:
<h3>What is the trigonometric identity that relates the sine and the cosine of an angle?</h3>
It is given by:
In this problem, the sine is:
Then:
On quadrant I, the cosine is positive, hence:
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Answer:
No, AB is not tangent to C.
If it were tangent, it would form a right angle with the radius, and we could use Pythagorean's Theorem.
3²+6²=7²
9+36=49
45=49 Since this is false, it's not a right angle, and AB is not tangent.
Step-by-step explanation:
No, AB is not tangent to C.
If it were tangent, it would form a right angle with the radius, and we could use Pythagorean's Theorem.
3²+6²=7²
9+36=49
45=49 Since this is false, it's not a right angle, and AB is not tangent.
Answer:
A. 3x
B. 8y
C. -12
Step-by-step explanation:
Combine like terms. Same variable raiased to the same exponent.
Answer:
A quadratic function is one of the form f(x) = ax2 + bx + c, where a, b, and c are numbers with a not equal to zero. The graph of a quadratic function is a curve called a parabola. ... A parabola intersects its axis of symmetry at a point called the vertex of the parabola. You know that two points determine a line.
Step-by-step explanation: