Questions and answers by

Sarah Fuller

Questions (11)

prove:cos*2x=csc*2x-2/csc*2x
1. 2 answers
2. 988 views
prove:cscxcos*2x+sinx=cscx
1. 1 answer
2. 556 views
prove:tan*2x-sin*2x=sin*2xtan*2x
1. 0 answers
2. 390 views
prove:1+cosx/1-cosx-1-cosx/1+cosx=4cotxcscx
1. 1 answer
2. 2,889 views
prove:sin*2x+tan*2x+cos*2x=sec*2x
1. 1 answer
2. 351 views
prove:sin(a+b)/cosacosb=tana+tanb
1. 1 answer
2. 1,969 views
Verify the identity:sin(x+y)/cos(x-y)=cotx+coty/1+cotxcoty
1. 1 answer
2. 1,085 views
A rear windshield wiper on a car has a total arm length of 10 inches and rotates back and forth through an angle of 95 degrees.
1. 2 answers
2. 1,774 views
Prove:1-sinx/1+sinx=sec*2x-2secxtanx+tan*2x
1. 0 answers
2. 722 views
A rear windshield wiper on a car has a total arm length of 10 inches and rotates back and forth through an angle of 95 degrees.
1. 1 answer
2. 1,526 views
Prove:sec*4x-tan*4x=1+2tan*2x
1. 0 answers
2. 530 views