Answer:
The answer is option B
Step-by-step explanation:
To find cos 45° we must first find the adjacent and the hypotenuse
Let the adjacent be x
Let the hypotenuse be h
To find the adjacent we use tan
tan ∅ = opposite / adjacent
From the question
the opposite is 9
So we have
tan 45 = 9 / x
x tan 45 = 9
but tan 45 = 1
x = 9
Since we have the adjacent we use Pythagoras theorem to find the hypotenuse
That's
h² = 9² + 9²
h² = 81 + 81
h² = 162
h = √162
h = 9√2
Now use the formula for cosine
cos∅ = adjacent / hypotenuse
The adjacent is 9
The hypotenuse is 9√2
So we have
cos 45 = 9/9√2
We have the final answer as
<h3 /><h3>cos 45 = 1 / √2</h3>
Hope this helps you
Answer: yes
Step-by-step explanation: [12(1/2)+5(6)] / 3(3) = 36/9 = 4
Answer:
c
Step-by-step explanation:
it's really product of power
Answer:
See below for solution.
Step-by-step explanation:
= 
<u>LHS :-</u>
= 
= 
= 
= 
= 
=> x = 8/3 and y = 1/3
=> <u>Option B</u>
<u></u>
<u></u>
+ 
+ 
= 4 x (∛216)² + (![\sqrt[4]256}](https://tex.z-dn.net/?f=%5Csqrt%5B4%5D256%7D)
)³ + 2 x (![\sqrt[5]{243}](https://tex.z-dn.net/?f=%5Csqrt%5B5%5D%7B243%7D)
)
= 4 x 36 + 64 + 2 x 3
= 144 + 64 +6
= 144 + 70
= <u>214</u>
