Desperate help needed with trig

[mathidiot]

Cant figure these out and very frustrated with it. this came out of a sheet of 158 problems, i know its alot of questions i asked but considering how many there are its feasible


1)if g(x)= cos 2x find the exact value of g(pi)
2)if f(x) = sin x express the function to the nearest ten thousandth f(4pi/2)
3) the value of tan 3pi/4 is equal to what in form of sin or cos
4)find a value for x, sin x= cos (2x+45)
5)find a value for x, cot(x+10)= tan 3x
6)write as a function of a positive acute angle less than 45, sin 125 degrees
7)write as a function of a positive acute angle less than 45,tan 297 degrees

Any and all help is appreciated thank you

 

[Deleted member 4993]

Cant figure these out and very frustrated with it. this came out of a sheet of 158 problems, i know its alot of questions i asked but considering how many there are its feasible


1)if g(x)= cos 2x find the exact value of g(pi)
2)if f(x) = sin x express the function to the nearest ten thousandth f(4pi/2)
3) the value of tan 3pi/4 is equal to what in form of sin or cos
4)find a value for x, sin x= cos (2x+45)
5)find a value for x, cot(x+10)= tan 3x
6)write as a function of a positive acute angle less than 45, sin 125 degrees
7)write as a function of a positive acute angle less than 45,tan 297 degrees

Any and all help is appreciated thank you

Please show us your work, indicating exactly where you are stuck - so that we know where to begin to help you.

for example,

in (1) \(\displaystyle g(\pi)\) means evaluate g(x) when \(\displaystyle x \, = \, \pi\) ... so what is the value of [subg8xzkrq]\(\displaystyle \cos(2\pi)\)[/subg8xzkrq]?