Answer:
Step-by-step explanation:
sin x=a+b
cos x=a-b
sin²x+cos²x=(a+b)²+(a-b)²=2a²+2b²
or 2a²+2b²=1
a²+b²=1/2 which is constant for all values of x
(ii)
Classify each triangle by side length and angle measure.
1 answer:
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Answer:
Average = 1
Step-by-step explanation:
Let us define the average first:
Average is calculated by adding up all the values and then dividing the sum by total number of values.
The formula for average may be written as:
In the following case,
Sum of numbers = -3-2+2+2+6 = 5
Count = 5
So,
Average = 5/5
=> Average = 1