What is sec(a + B)
If
cos(a+B) = cos a cos B - sin a sin B
then does
sec(a+ B) = 1 / cos(a+B) =
1 / cos a cosB - sin a sin B ??

Hey! We 've verified this expert answer for you, click below to unlock the details :)

I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!

that's sum and difference identities.

Looking for something else?

Not the answer you are looking for? Search for more explanations.

## More answers

Looking for something else?

Not the answer you are looking for? Search for more explanations.