A. vertical angles are congruent
b. alternate interior angles are congruent
c. if alternate interior angles are congruent, lines are parallel <span />
secx=1/cosx
1. To solve this problem you must apply the following proccedure:
2. You have to verify if secx sinx=tanx, so, you have:
3. You know that secx=1/cosx, and tanx=sinx/cosx, therefore:
(secx)(sinx)
(1/cosx)(sinx)
sinx/cosx
tanx
Answer:
C
Step-by-step explanation:
Step-by-step explanation:
Equation: 3.9^2 + x^2 = 11^2
x = 10.29
She can find out answer by dividing 21÷3 and the answer is 7
She can make 7 bird house