Sin x = cos (90-x)
eg sin 42 = cos(90-42) = cos 48
so the answer is B
Answer:
6+(2x+4)=1/2-(3+x) okay I hope this is it.
Good luck on this.
As what I can observe, the pathway can be formed with 2 right triangles. Thus, I'll get the area of the 2 right triangles and multiply its area by the paving cost per square meter.
Area of Right Triangle: ab / 2
a = 6 2/3 m ⇒ 20/3 m; b = 3m
Area of 1 triangle= (20/3 m * 3 m) ÷ 2 = 20 ÷ 2 = 10 m²
Area of 2 triangles = 10m² * 2 = 20 m²
Total cost = $40 * 20m² = $800
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Answer:
-4 = 5 - 9
Step-by-step explanation:
-4 = ? - 9
Add 9 to -4
5
The result of -4 = ? - 9 is 5
-4 = 5 - 9
-4 = -4
