If a+b+c=90° then prove that
sin²A+sin²B+sin²C= 1-2 sinA sinB sinc​

Two parallel lines are crossed by a transversal.what is value of x

What is the solution to the equation below? 3/x-2+6=square root x-2 +8

Three baby penguins and their father were sitting on an iceberg 0.50.50, point, 5 meters above the surface of the water. the father dove down 4.74.74, point, 7 meters from the iceberg into the water to catch dinner for his kids. what is the father penguin's position relative to the surface of the water?