Answer:
see explanation
Step-by-step explanation:
Using the trigonometric identity
• 1 + cot²x = csc²x
Consider the left side
x - 
x
Factorise as a difference of squares
= (csc²x - cot²x)(csc²x + cot²x)
= (1 + cot²x - cot²x)(csc²x + cot²x)
= csc²x + cot²x
= csc²x + csc²x - 1
= 2csc²x - 1 = right side ⇒ verified
Answer:
0.6
Step-by-step explanation:
9 is the numerator and 15 is the denominator
divide 9 ÷ 15
which is 0.6
It is proportional because the number are even and can be divided by the same number
Answer:
plug in 2 for x
Step-by-step explanation:
square root of 10^2 - 2^2
square root of 96
40 percent
*how to solve*
First write 8 out of 20 as a fraction:
8/20
Then multiply both sides by 5 so that the denominator is 100:
40/100
40/100 = 40 percent
