via the angle sum identity for cosine.
Answer:
A = 450 cm²
Step-by-step explanation:
Since the right triangle is isosceles then the 2 logs are congruent , both 30 cm and at right angles to each other.
The area (A ) of the triangle is calculated as
A = bh ( b is the base and h the perpendicular height )
Here b = h = 30 , then
A = × 30 × 30 = × 900 = 450 cm²
The answer for 1/2 plus
5/8 is 6/10
Answer: x>-6
Explanation: -2x -6>-18
-2x >-12
-x>6
X>-6