Lesson#6
Toolkit for Exercise 9.4
Prove the following identity:
Question No. 20
Q20: sin^3 θ−cos^3 θ=(sinθ−cosθ)(1+sinθcosθ)
Question No. 21
Q21: sin^6 θ−cos^6 θ=(sin^2 θ−cos^2 θ)(1−sin^2 θcos^2 θ)
Question No. 22
Q22: sin^6 θ+cos^6 θ=(1−3sin^2 θcos^2 θ)
Exercise No. 9.4
Chapter No.9
Fundamentals of Trignometry
maths
part 1
Toolkit for Exercise 9.4
Prove the following identity:
Question No. 20
Q20: sin^3 θ−cos^3 θ=(sinθ−cosθ)(1+sinθcosθ)
Question No. 21
Q21: sin^6 θ−cos^6 θ=(sin^2 θ−cos^2 θ)(1−sin^2 θcos^2 θ)
Question No. 22
Q22: sin^6 θ+cos^6 θ=(1−3sin^2 θcos^2 θ)
Exercise No. 9.4
Chapter No.9
Fundamentals of Trignometry
maths
part 1
Category
📚
Learning