Use De Moivers theorem and simplify the following: `frac{cos 5theta + i sin 5theta}{(cos 3theta - i sin 3theta)^2}`

Use De Moivers theorem and simplify the following: frac{(cos 2theta + i sin 2theta)^7}{(cos 4theta + i sin 4theta)^3}

Use De moivers theorem and simplify the following. (Cos 5theta + i Sin 5theta) / (Cos 3theta - i Sin 3theta)^2

Use De moivers theorem and simplify the following. (Cos 2theta + i Sin 2theta)^7 / (Cos 4theta + i Sin 4theta)^3

sin theta/(1+cos theta)=

Simplify the following. (Cos theta - i Sin theta)^7 / (Cos 2theta - i Sin 2theta)^4

Use De Moveres Theorom and simplify . (( cos 5 theta + i sin 5 theta ) ^(2))/( ( cos 4 theta -i sin 4 theta ) ^(3))

Use De Moivers theorem and simplify the following: frac{(cos 7(pi)/13+ i sin 7(pi)/13)^4}{(cos 4(pi)/13 - i sin 4(pi)/13)^6}

(5) Simplify : sin theta ( cosec theta - sin theta ).

Prove the following: (frac(1-cos2theta+sin2theta)(1+cos2theta+sin2theta))=tantheta

Evaluate the following: int frac{cos theta }{cos 3 theta} d theta