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
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2. asked by Hannah
3. 640 views
find the angle (theta) using cofunction identitessin(3theta-17degrees)=cos(theta+43degrees)
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2. asked by stacey graham
3. 563 views
1) Use the cofunction identites to evaluate the expression without the aid of a calculator.cos^2 18 degrees + cos^2 72 degrees.
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2. asked by Abby
3. 627 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. 736 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
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2. asked by robert
3. 762 views
what is the UK?(about identites etc)
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2. asked by andyy
3. 325 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
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2. asked by Caroline
3. 476 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. 485 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. 436 views
Simplify using identitestan(-x)cosx
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2. asked by Raeven
3. 379 views