The slope is 2 because it rises 2 up and goes 1 to the right, hence 2/1 = 2
given
substitute the value given into the equation
thus simplifying the numerator only
Answer:
The value of cos Ф is ±
Step-by-step explanation:
There are important rules for sin Ф and cos Ф
∵ sin Ф =
∴ sin²Ф =
∴ sin²Ф =
→ By using the third rule above
∵ cos²Ф = 1 - sin²Ф
∴ cos²Ф = 1 -
∴ cos²Ф =
→ Take square root for both sides
∴ cos Ф = ±
∴ The value of cos Ф is ±
Answer:
Complementary, 65
106+x=180
Step-by-step explanation:
Complementary angles add to 90, Supplementary angles add to 180
These are complementary angles
x+25 = 90
Subtract 25 from each side
x+25-25 =90-25
x = 65
The next questions they are supplementary angles because they add to 180
106+x=180
Subtract 106 from each side
106-106+x=180-106
x=74