Hey !!!
sinx = 3/5 ( given )
We know a formula of cos2x = ( 1 - 2sin²x)
putting the value of sinx on value of cos2x = ( 1 - 2sin²x)
hence,
we get
cos2x = ( 1 - 2sin²x )
=> [1 - 2 × ( 3/5 )² ]
=> [ 1 - 2 × 9 /25 )
=> [ 25 - 18 /25 ]
=> 7/25 Answer ✔
1. 0.6
2. 10
3. -½
the answers are thrre ...
Answer:
Imaginary
Step-by-step explanation:
If you draw this, you'll see it forms a triangle, with the ladder as the hypotenuse. We're given the two side measurements, so we can easily use Pythagorean theorem to find the ladder length (x):
(12^2 + 4.8^2) = x^2 .... x = 12.92ft
The answer is C.2 that is the answer
