Answer:
(1-cos^2 x)(1+tan^2 x)=tan^2 x is an identity
Step-by-step explanation:
use pictomath
Answer:
Step-by-step explanation:
A) The diagonals of a parallelogram are perpendicular
B) The diagonals of a kite bisect each other
- Sometimes (one of the diagonals is bisected)
C) A polygon is a quadrilateral
- Sometimes (when it has 4 sides)
D) Thé diagonals of a rectangle are equal
- Always (definition of rectangle)
E) Thé opposite angles of a parallelogram are equal
- Always (definition of parallelogram)
F) A rhombus is a rectangle
- Never (when all interior angles are equal it becomes a square)
Answer:
-8 + i
Step-by-step explanation:
(-3 + 2i) * (2 + i)
= -6 + -3i + 4i + 2i^2
= -6 + i - 2
= -8 + i
Answer:
72.8 cm³
Step-by-step explanation:
The relevant formula is ...
V = Bh
Using the given values, you find the volume to be ...
V = (10.4 cm²)(7 cm) = 72.8 cm³
