Answer:
x = 5
Step-by-step explanation:
Angles in a triangle add up to equal 180
Hence, 10x - 1 + 78 + 53 = 180
( Note that we just created an equation that we can use to solve for x )
We now solve for x using the equation we created
10x - 1 + 78 + 53 = 180
Combine like terms
10x + 130 = 180
Subtract 130 from both sides
10x = 50
Divide both sides by 10
x = 5
Answer:69,420
Step-by-step explanation:
9+10=21
Answer:
None of your options
Step-by-step explanation:
1 - sin ^2 (x) / sin(x) - cosec(x) =
Cos^2 (x) /[ sin(x) - 1/sin (x)] {since sin^2 (x) + cos ^2 (x) = 1 and cosec(x) =1/sin(x)}.
Therefore cos^2 (x) / [sin^2 (x) - 1] =
Cos^2 (x). Sin(x) /[ -cos^2 (x)] {since, sin^2 (x) - 1 = cos^2 (x)} = - sin(x).
So answer is [-sin(x)].