Answer:
Triangle
Step-by-step explanation:
Area of a triangle
= 1/2 x base x height
Answer:
1,6
-5,9
2,3
Step-by-step explanation:
Answer:
a = 66⁰
b = 33⁰
Step-by-step explanation:
Given;
∠ABC = 114⁰
To calculate a⁰;
a + 114 = 180⁰ (opposite angles of a quadrilateral are supplementary)
a = 180 - 114
a = 66⁰
To calculate b⁰;
Line AB = Line BC, thus, ∠BAC = ∠BCA
∠BAC = b, then ∠BCA = b
b + b + 114 = 180 (sum of angles in a triangle)
2b = 180 - 114
2b = 66
b = 66/2
b = 33⁰
I assume there's a plus sign missing above...
Convert to polar coordinates, using

Then the Jacobian is

Then

so the integral can be written as

Let

, so that

.