Question

a sin+ b cos2 = c → Tan20 =​

Answer 1

Answer:

asin

2

θ+bcos

2

θ=c

cos

2

θ(atan

2

θ+b)=c

atan

2

θ+b=csec

2

θ

atan

2

θ+b=c+ctan

2

θ

(a−c)tan

2

θ=c−b

∴tan

2

θ=

a−c

c−b