2x - 6 = 2 • (x - 3)
2 = 0
x-3 = 0
x=3
Given:
There are given that the cos function:

Explanation:
To find the value, first, we need to use the half-angle formula:
So,
From the half-angle formula:

Then,
Since 105 degrees is the 2nd quadrant so cosine is negative
Then,
By the formula:

Then,
Put the value of cos210 degrees into the above function:
So,

Final answer:
Hence, the value of the cos(105) is shown below:
PQS = 40 because if you look at the image above it half equals 20 and 20+20=40
Answer:
your answer would be 2 and 1/5 :) hope this helps
Step-by-step explanation:
-Rayne
Something I noticed about angle 4, is that it shares a straight line with angle 3. (above it is a straight line)
A straight line equals 180 degrees.
So, angle 4 + angle 3= 180 degrees.
Angle 3 is congruent to angle 7.
180-132= Angle 7
180-132= 48
48 degrees is your answer.
I hope this helps!
~kaikers