What is the critical sin(θ)+cos(θ) ?

The critical sin(θ)+cos(θ) is θ= pi/4+2pin,θ=(5pi)/4+2pin

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critical sin(θ)+cos(θ)

critical points

sin (θ) + cos (θ)

θ = \frac{π}{4} + 2 πn, θ = \frac{5 π}{4} + 2 πn

Solution steps

sin (θ) + cos (θ)

Find where

f^{'} (θ)

is equal to zero or undefined

θ = \frac{π}{4} + 2 πn, θ = \frac{5 π}{4} + 2 πn

Identify critical points not in

f (θ)

domain

Domain of

sin (θ) + cos (θ) : - \infty < θ < \infty

All critical points are in domain

θ = \frac{π}{4} + 2 πn, θ = \frac{5 π}{4} + 2 πn

x^{2} + 1

f (x) = e^{a r c t a n (x)}

f (x) = ln (x - 5) + ln (x)

x^{3}

(26), (2 - 2)

What is the critical sin(θ)+cos(θ) ?
The critical sin(θ)+cos(θ) is θ= pi/4+2pin,θ=(5pi)/4+2pin