Find`sintheta`such that `3costheta+4sintheta=4`.

Find the acute angle theta such that 2cos^2theta=3sintheta .

(sintheta+sin 2theta)/(1+costheta+cos2theta)=

If costheta-sintheta=sqrt2sintheta then costheta+sintheta is equal to

sintheta/(1-cottheta)+costheta/(1-tantheta)=

Simplify costheta[[costheta,sintheta],[-sintheta,costheta]+sintheta[[sintheta,-costheta],[costheta,sintheta]]

Show that: |(sintheta,costheta),(-costheta,sintheta)| =1

If [frac{1+costheta+isintheta}{i+sintheta+icostheta}]^4 = cos ntheta+isin ntheta , then n is equal to

Prove the following: (sintheta+cosectheta)^2+(costheta+sectheta)^2=Tan^2theta+cot^2theta+7

Eliminate theta,if x=2 costheta-3sintheta y= costheta+2sintheta