Guys, I just find trig so hard

how would I solve these (preferably in depth because when it comes to trig, I just struggle sm) thanks

i've got no working to show

solve for values of x in the range

0<=x<=180

2sinx=3cos(x-60)

sinx=cos(x+120)

solve the following equations for values of x in the range 0<=x<=pi

sin(x+pi/4)=cosx

how would I solve these (preferably in depth because when it comes to trig, I just struggle sm) thanks

i've got no working to show

solve for values of x in the range

0<=x<=180

2sinx=3cos(x-60)

sinx=cos(x+120)

solve the following equations for values of x in the range 0<=x<=pi

sin(x+pi/4)=cosx

Original post by zolearns

Guys, I just find trig so hard

how would I solve these (preferably in depth because when it comes to trig, I just struggle sm) thanks

i've got no working to show

solve for values of x in the range

0<=x<=180

2sinx=3cos(x-60)

sinx=cos(x+120)

solve the following equations for values of x in the range 0<=x<=pi

sin(x+pi/4)=cosx

how would I solve these (preferably in depth because when it comes to trig, I just struggle sm) thanks

i've got no working to show

solve for values of x in the range

0<=x<=180

2sinx=3cos(x-60)

sinx=cos(x+120)

solve the following equations for values of x in the range 0<=x<=pi

sin(x+pi/4)=cosx

For these you should expand the relevant trig terms using the addition identites so

sin(A+B) = ....

cos(A+B) = ...

and then simply solve for x as usual . You must know the identities, so have a go and post what youve tried.

(edited 1 year ago)

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