Answer:
see explanation
Step-by-step explanation:
Using the trigonometric identity
sin²x + cos²x = 1 ⇒ sin²x = 1 - cos²x
Given
sin²x + 7cosx + 17
=1 - cos²x + 7cosx + 17
= - cos²x + 7cosx + 18 ← factor out - 1 from each term
= - (cos²x - 7cosx - 18)
Consider the factors of the constant term (- 18) which sum to give the coefficient of the cosx term (- 7)
The factors are - 9 and + 2, thus
= - (cosx - 9)(cosx + 2) ← in factored form
Answer:
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Answer:
AREA
Step-by-step explanation:
area of parallelogram equal to BD into 8 feet into 3 by 4 6 feet
the area of the triangle ADB equal to the area of triangle DBC be equal to 3
Hypotenuse²= (4x)²+ x²=16x²+x²=17x²
Hypotenuse=√(17x²)= x√17
To find perimeter, we need to add all sides
P=x+4x+ x√17 =5x+x√17 =x(5+√17)