2^3 * 2^-5 = 2^(3 + (-5) = 2^(3 - 5) = 2^-2
Answer:

Step-by-step explanation:
Given



Required
PQ
Since Q is between the given points, then:

This gives:

Collect like terms


Next, solve for x
We have:


This gives:

Collect like terms


Divide by 2

So:



Answer:
0
Step-by-step explanation:
Angle x+45 = (145-55) / 2
2x + 90 = 90
2x = 0
x = 0
Answer: ARE THEIR OPTIONS TO CHOSE FROM
Step-by-step explanation:
Answer:
Cos 74°= Sin 16°
Sin 20°= Cos 70°
Sin A°=Cos (90°- A°)
Step-by-step explanation:
This is because the three pairs are complementary i.e they add up to 90° and in trigonometric ratios, complementary ratios are equal.