1) Use the cofunction identites

1) verify the identitysec^2 (pi/2 - x) -1 = cot^2 x I think that we can replace sec with csc for the cofunction formulas since
1. 1 answer
2. asked by Hannah
3. 613 views
find the angle (theta) using cofunction identitessin(3theta-17degrees)=cos(theta+43degrees)
1. 0 answers
2. asked by stacey graham
3. 535 views
1) Use the cofunction identites to evaluate the expression without the aid of a calculator.cos^2 18 degrees + cos^2 72 degrees.
1. 1 answer
2. asked by Abby
3. 600 views
1) Use the cofunction identites to evaluate the expression without the aid of a calculator.cos^2 18 degrees + cos^2 72 degrees.
1. 2 answers
2. asked by Abby
3. 709 views
need an aswer quich ok thiers two the find sin(2pi/3 -pi/4) using sum and difference identites and then tan 5pi/12 using the
1. 1 answer
2. asked by robert
3. 732 views
what is the UK?(about identites etc)
1. 1 answer
2. asked by andyy
3. 301 views
Prove these identitesI really need help with these I don't understand how to do them !!!! sin^2+tan^2=sec^2-cos^2 sin^2 sec^2
1. 1 answer
2. asked by Caroline
3. 449 views
Prove these identitesI really need help with these I don't understand how to do them !!!! sin^2+tan^2=sec^2-cos^2 sin^2 sec^2
1. 3 answers
2. asked by Elena
3. 457 views
Prove these identitesI really need help with these I don't understand how to do them !!!! sin^2+tan^2=sec^2-cos^2 sin^2 sec^2
1. 1 answer
2. asked by Elena
3. 418 views
Simplify using identitestan(-x)cosx
1. 1 answer
2. asked by Raeven
3. 342 views