Answer:
Step-by-step explanation:
We can use the double angle identity for sine.
The given expresion is
We apply the identity to get:
We simplify to obtain;
This simplifies to:
The correct answer is D
Answer:
Read the explanation
Step-by-step explanation:
Explanation:
When multiplying and dividing more than two positive and negative numbers, use the Even-Odd Rule: Count the number of negative signs — if you have an even number of negatives, the result is positive, but if you have an odd number of negatives, the result is negative. This problem has just one negative sign
30 should be right ur welcome
Answer:
29
Step-by-step explanation:
Answer:
220
Step-by-step explanation:
We need to find the 3rd side length
We already know the hypotenuse and one side, so we can use the Pythagorean formula.
101^2 = a^2 + 20^2. A is the third side, and solving for it, we find that it equals 99.
Side 1 = 101
Side 2 = 99
Side 3 = 20
101 + 99 + 20 = 220
