We have sec =
1/cos
Then we also have
cos^2 = 1 – sin^2
Also we have cos = sqrt (1 – sin^2)
Substitute the derived cosine function to sec then we
have
Sec = 1/(sqrt(1-sin^2)
Answer:

Step-by-step explanation:
Given a quadratic equation in the form
, you can use the Quadratic formula to solve it. This is:

Then, you need to subtract
from both sides of the equation given:

You can identify that:

Then, substituting values into the Quadratic formula, you get:


25% of 40 is 40 times 25 divided by 100 which is 10 (number of children in the club)
Answer:
4x812y3
Step-by-step explanation:
Answer:
a) 51 degrees
b) 134 degrees
Step-by-step explanation:
39+51=90
46+134=180