Hey!
For 45-45-90 triangles you use you use the formula L(on the square root of)2
L represents the legs.
So you plug in
3(on the square root of)2 times (the square root of)2
You multiply the square roots to get
3(on the square root of)4
You simplify the square root of 4 to 2
So 3 times 2 = 6
So 6 is the answer
Hope this helped!
The walking stick is 4 feet 10.5 inches long.
Step-by-step explanation:
Answer:
Step-by-step explanation:
Putting x = 1
=>
Given that f(1) = 1
=>
=> -------------------(1)
Now,
Putting x = 2
=>
Given that f(2) = 5
=>
=>
=> ----------------(2)
Subtracting (2) from (1)
For b , Put a = 9 in equation (1)
Answer:
The other 2 angles are 28 and 62 degrees.
Step-by-step explanation:
The sum of all the angles of a triangle is always equal to 180 degrees.
If two angles are known the third can be found out.
A right angled triangle always has an angle equal to 90 degrees.
If the base is 15 and the perpendicular is 8 and the hypotenuse is 17
then
Tan theta= Perpendicular/base
Tan theta= 8/15
theta = tan⁻¹ 8/15
theta = 28.072
The third angle is 28 degrees which is less than 90 degrees and is acute
This can also be obtained by
cos theta= base / hypotenuse
cos theta= 15/17
theta= cos⁻¹ 15/17
theta= 28.072
Now summing up
90+ 28 + x= 180
x= 180-118
x= 62
The third angle is 62 degrees which is also less than 90 degrees.
Answer:
B 0.6825
Step-by-step explanation:
From the tables
0.80 = 02881 of the area
1.25 = 0.3944 of the area
Sum of these 2 = 0.6825