Prove that Cot4x(sin5x+sin3x)=cotx (sin5x-sin3x)
Question
Using your protractor draw an angel BAC of measure 120 degree. With this aangle as given, draw an angle of measure 90 degree. Verify by measurement. [HINT : 1draw a ray AX, the bisector of angle BAC. 2 draw a ray AY, the bisector of angle CAX. 3 Then BAY is the required angle. ]
7 & 8 give solution.