Answer:
Step-by-step explanation:
Cos(65°) = √(1 + cos(130°)) / 2
0.42=√(1 - 0.64)/2
0.42=√(0.36)/2
0.42²=√0.18²
Answer:yes
Step-by-step explanation:
Each of their corners are at a 90* angle
Step-by-step explanation:
Both are very correct,

because any number raised to the power of a negative
is given as

if this helped pls give brainliest
Answer:
OH MY GOD I NEEED HELP WITH QUESTION TOOOOOOO