Answer:
Step-by-step explanation: Tip 1) Always Start from the More Complex Side.
Example Q1) Prove the identity tan⁴x = sec²x (tan²x-1)+1.
Tip 2) Express everything into Sine and Cosine.
Tip 3) Combine Terms into a Single Fraction.
Tip 4) Use Pythagorean Identities to transform between sin²x and cos²x.
Tip 5) Know when to Apply Double Angle Formula (DAF)
Answer:
Therefore the maximum number of books sold by the bookstore would be = 120 + 25 = 145 books.
Therefore the minimum number of books sold by the bookstore would be = 120 - 25 = 95 books.
Step-by-step explanation:
i) Average of 120 books sold per week.
ii) the value can vary by as many as 25 books.
iii) therefore the maximum number of books sold by the bookstore would be = 120 + 25 = 145 books.
iv) therefore the minimum number of books sold by the bookstore would be = 120 - 25 = 95 books.
Answer: y=15/4x+35/4
Step-by-step explanation:
Step-by-step explanation:
STEP 1:
Find a length of third side.
Use the Pythagorean theorem:
STEP 2:
Use the trigonometric functions:
STEP 3:
Use theorem: the sum of the measures of acute angles of the right triangle is 90°.
Example:
We have the length of legs: a = 3, b = 4.
Let c = hypotenuse.
Use the Pyhagorean theorem:
Angle between a and c (β):
Use sine. Therefore b = opposite, c = hypotenuse:
<em>look at the picture</em>
<em>subtract 37° from both sides</em>
Expression for g is g = 4πl/T²
Step-by-step explanation:
- Step 1: Fing g from the given expression T = 2π. Firstly, square the expression to find g.
⇒ T² = 4π²
⇒ gT² = 4πl
⇒ g = 4πl/T²