Class 8 question please answer (sin x - sin y) (sin x + sin y)
1 answer:
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Answer:
?=9
Step-by-step explanation:
We have a special right triangle, the 45-45-90 triangle.
In a 45-45-90 triangle, the side lengths are x, and the hypotenuse is x√2.
Since we know that the side length is 9, this means that:
The ? is 9.
Alrighty
remember some rules
and
and
for all real values of x
and
and
and
(a/b)/(c/d)=(ad)/(bc)
and
and
and don't forget pemdas
example:
but 
so
4.
5.
remember some rules
and
and
and
and
and
(a/b)/(c/d)=(ad)/(bc)
and
and
and don't forget pemdas
example:
so
4.
5.