Practice Evaluate Trig Expressions 1

puremath

New member
Evaluate each expression given that

f(x) = sin x

g(x) = cos x

h(x) = tan x

k(x) = 2x

A. f(5pi/6 + pi/6)

B. g[k(3pi/4)]
 
Last edited:

MarkFL

La Villa Strangiato
Math Helper
A. It looks like \(f\) is defined to be a function of 1 variable, so treating it like a function of two variables makes no sense.

B. Give this a go...you should be able to show that it is zero.
 

puremath

New member
A. It looks like \(f\) is defined to be a function of 1 variable, so treating it like a function of two variables makes no sense.

B. Give this a go...you should be able to show that it is zero.

I edited A. This looks like composition of functions.
 

MarkFL

La Villa Strangiato
Math Helper
Adding the argument, we find it is:

[MATH]f(\pi)=0[/MATH]
 
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