Step-by-step explanation:
note that
sin²x = (1-cos²x)
LHS= cos²x - 2 sin²x
= cos²x - 2(1-cos²x)
= cos²x - 2 + 2cos²x
= 3cos²x - 2
or
cos²x = (1-sin²x)
LHS= cos²x - 2 sin²x
=1-sin²x - 2 sin²x
= 1-3sin²x
Cube root of 32: 3.17
Cube root of 118: 4.90
Cube root of 18: 2.62
Cube root of 319: 6.83
Answer:17
Step-by-step explanation:
2x=5x−51
−3x=−51
x=
3
51
x=17
9/1 and then your answer would be 9 and then add the a so your full answer would be 9a
Width: x
length: x + 4
Equation: 2(x + x + 4) = 56
2(2x + 4) = 56
4x + 8 = 56
4x = 48, x = 12
Width = 12, 12 + 4 = length
Solution: the length is 16 inch
