Answer:
7/21 is equivalent to 5/15
Step-by-step explanation:
Answer:

Step-by-step explanation:
It is given that:

And we have to find the value of 
As per trigonometric identities, the relation between
can represented as:

Putting
in place of
Because we are given

Putting value of cosine:


It is given that
is in 2nd quadrant and value of sine is always positive in 2nd quadrant. So, the answer is.

Answer:
the third answer
Step-by-step explanation:
We are asked to write an expression that uses partial products to multiply 8 and 64. In this case, we can break 8 into 2 x4 and 64 into 8x8. In this case, multiplying these factors equal to 512. Any factors will do actually since it will yield the same product