Show:
Simplify/Verify Trig Expressions 1
Simplifying Trig Expressions 2
Triangles
Evaluating
Solving Trig Equations
100
tanx(cotx+tanx)
What is sec^2(x)?
100
2sin(4x)cos(4x)
What is sin8x?
100
Find the EXACT value of cos(A+B) if cosA=-5/13 and sinB=7/25 where A and B are in Quadrant II
What is 36/325?
100
cos^2(15)-sin^2(15)
What is cos30=(sqrt3)/2?
100
Solve: 4cos(2x)+2=0
What is 60 degrees and 105degrees?
200
(secx+1)(secx-1)
What is tan^2(x)?
200
(tan5x-tan4x)/(1+tan5xtan4x)
What is tanx?
200
Find the EXACT value of cos(2B) if cosA=-5/13 and sinB=7/25 where A and B are in Quadrant II
What is 527/625?
200
1-2sin^2(pi/8)
What is cos(pi/4)=sqrt2/2
200
Solve: 2tan(2x)+2=0
What is 67.5 and 157.5 degrees?
300
(tan^2x+1)/(2sec^2x)
What is 1/2?
300
sin(4x)cos(3x)-cos(4x)sin(3x)
What is sinx?
300
Find the EXACT value of sin(2A) if cosA=-5/13 and sinB=7/25 where A and B are in Quadrant II
What is -120/169?
300
2sin(22.5)cos(22.5)
What is sin45=sqrt2/2?
300
Solve: tan^2x+tanx=0
What is 0,135,180, and 315 degrees?
400
(cos^2x)(tan^2x+1)=
What is 1?
400
sqrt(1-cos8x/2)
What is sin4x?
400
Find the EXACT value of cos(B/2) if cosA=-5/13 and sinB=7/25 where A and B are in Quadrant II
What is sqrt(1/50)
400
(tan75-tan30)/(1-tan75tan30)
What is tan45=1?
400
Solve: 2sin^2x+sinx-1=0
What is 30,150,270 degrees?
500
(tan^4x-1)/(tan^2x-1)
What is sec^2x?
500
cos(-x)cos(-2x)+sin(-x)sin(-2x) Careful!
What is cosx?
500
Find the EXACT value of tan(A/2) if cosA=-5/13 and sinB=7/25 where A and B are in Quadrant II
What is 3/2 or 1.5?
500
2tan(-pi/8)/(1-tan^2(-pi/8))
What is tan(-pi/4)=-1?
500
Solve: sec^2x-3secx+2=0
What is 0,60,300 degrees?