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hi guys,
Are we required to know Double Angle Formulas, Half Angle Formulas, and sum and differences for sin, cos, tan? Isn't that too much?
Do we have to know this...
Cos2x= cos^2 x - sin^2 x
= 2cos^2 -1
= 1- 2sin^2 x
All those good stuffs 🙄 ... Thanks...
Are we required to know Double Angle Formulas, Half Angle Formulas, and sum and differences for sin, cos, tan? Isn't that too much?
Do we have to know this...
Cos2x= cos^2 x - sin^2 x
= 2cos^2 -1
= 1- 2sin^2 x
All those good stuffs 🙄 ... Thanks...
