Answer:
See solution below
Step-by-step explanation:
Given the expression
Recall that
cos x = sin(90-x)
cos(x+30 ) = sin (90-(x+30)
= sin(90-x-30)
= sin(60-x)
Substitute
Answer:
y^2*y^3
Step-by-step explanation:
Use the power of 5
200
If the number is divisible by 5, then the last digit should be either 5 or 0.
First digit is fixed.
Second digit can be 10 ways.
Third digit can be 10 ways.
Fourth digit can be 2 ways.
So total number of digits 1 x 10 x 10 x 2 = 200
Fifteen More means to add, so far:
15+
twice a number, you don't know the number, so let's call this number X.
Also, it's saying twice more. So, 15x since you can't add multiply a number.
is means =
15x = 9 is your answer.
