Questions LLC
Login
or
Sign Up
Ask a New Question
Mathematics
Trigonometry
Trigonometric Identities
Simplify sin²x+cos²x
1 answer
The expression sin²x + cos²x is equal to 1. This is known as the Pythagorean Identity, which states that sin²x + cos²x = 1 for all values of x.
You can
ask a new question
or
answer this question
.
Related Questions
find all solutions of the equation 2sin x cos2x-cos2x=0 over the interval 0<x<=pi
angle x lies in the third quadrant and tanx=7/24
determiner an exact value for cos2x determiner an exact value for sin2x
if sin2x=3sin2y,
prove that: 2tan(x-y)=tan(x+y) ( here, in sin2x, 2x is an angle., like there's a formula:sin2x=2sinxcosx and
Use the Pythagorean identity to show that the double angle formula for cosine can be written as
a) cos2x = 1 - 2sin^2x b) cos2x =
d2y/dx2+9y=cos2x+sin2x
find sin2x, cos2x, and tan2x if sinx= -2/sqrt 5 and x terminates in quadrant III
Sin5x cos2x + cos5x sin2x=
write sin4xcos2 as the sum or difference of two functions. answers: 1/2(cos6x+cos2x), 1/2(cos2x-cos6x), 1/2(sin6x+sin2x),
Verify the trigonometric identity:
[(1–sin²x)/sin²x]–[(csc²x–1)/cos²x]= -tan²x I still can't figure this out.
(sec6x+sin2x)/(sin6x-sin2x)=tan4xcot2x