question 1: 36x25
Answer: B. 900 square yards
Question 2: 231
question 3: 309,058,304
the area of the surface of this design is 31 in long
Given:
To find:
The exact value of cos 15°.
Solution:
Using half-angle identity:
Using the trigonometric identity:
Let us first solve the fraction in the numerator.
Using fraction rule:
Apply radical rule:
Using :