Simplify to a single trig function with no denominator.
tan? x + 1

sec²x

Step-by-step explanation:

Using the trigonometric identity

tan²x + 1 = sec²x

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  sec² x

Step-by-step explanation:

It is a trig identity that ...

  tan² x + 1 = sec² x

If you like, you can convince yourself of this using the usual equivalents for tan and sec:

  tan² x + 1 = sin² x/cos² x +1 = (sin² x + cos² x)/cos² x = 1/cos² x = sec² x

step-by-step explanation:

given perimeter: 28cm

length: 9cm

atp,

2(l+w)=p of the reactangle

2(9+x)=28

18+2x=28

2x=28-18

x=10/2

x=5

therefore width is 5 cm

49%

step-by-step explanation:

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