Find the value of sin75°.
sqrt(2+sqrt3)/2
Solve
sin2x=cosx
on the interval [0, 2π].
x=π/6 and 5π/6
Simplify the expression to a single trigonometric function
(1 – cos^2x)(cscx)
sinx
Find the exact value of the following expression: sin147°cos78°+cos147°sin78°
-(√2)/2
What is the equation for sin(x/2)?
±√(1-cosx)/2
Find the value of
tan((7π)/12)
-2-sqrt(3)
Solve
1-sin^2x-cos2x=3/4
π/3 and 5π/3
Simplify this expression into an expression whose only trig function is sin:
sin^4(x) - cos^4(x)
2sin^2(x) - 1
Solve
2sin^2(x/2)+cosx=1+sinx
on the interval of
[0,π]
0, pi
Find sin2π when sinx=-5/13 and "x IS GREATER THAN 3π/2 AND LESS THAN 2π."
-120/169
Simplify this complex fraction into a single trigonometric function:
[(sinx/cosx) + (cosx/sinx)]/[(1)/(sinx)]
1/cosx
Solve
2tan(x/2)+2cos(x)tan(x/2) = 1
on the interval [0,2π].
π/6 and 5π/6
Solve cos2x=cosx on the interval [0,2π].
0 and π and 4π/3 and 4π/5
Simplify:
[(1 - cos^2(x))]/[(sec^2(x) - 1)
cos^2(x)
Find
tan(x/2)
when
tanx=-1/2
and x is in the second quadrant.
2 - sqrt(5)
If… csc(x) = 5/3 and tan(x) = 3/4, find the values of the remaining trigonometric functions using a Pythagorean Identity.
cos(x) = +4/5
Establish the identity tanx – tany = (sin(x-y))/((cosx)(cosy))
(sin(x-y))/((cosx)(cosy)) = (sinx(cosy) - cosx(siny))/((cosx)(cosy)) = (sinx (cosy))/((cosx)(cosy)) – (cosx(siny))/((cosx)(cosy)) = tanx(1) – 1(tany) = tanx – tany = tanx – tany QED