The temperature is 15°C and drops 8°C. Write an addition equation to calculate the final temperature. What is the final temperat
1 answer:
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Answer:
89.0°
Step-by-step explanation:
The segment from the centre of the circle to the chord is a perpendicular bisector, hence
third side of right triangle = 12.7 ÷ 2 = 6.35
The angle subtended at the centre by arc CD is twice the angle subtended by the right triangle at the centre
The triangle from the centre to C is congruent to the triangle from the centre to D
Calculate the angle (Θ ) in the right triangle using the sine ratio
sinΘ = =
Θ = (
) ≈ 44.5°
Hence
measure of CD = 2 × Θ = 2 × 44.5 = 89.0°
Answer: D. (4,4)
Step-by-step explanation:
1. You have the following expression:
3. To find the point that satifies the expression shown above, you only need to substitute each one of them into the expression, as you can see below:
A. (This is not true)
B. (This is not true)
C. (This is not true)
D. (This is true)
4. Therefore, the correct answer is the option D, which is: (4,4)