Q12Long answer
Prove that tan 1 + x – 1– x 4 2 2 2 3 4 –3 Find the simplified form of cos cos x + sin x , where x ∈ –1 , 4 4
Prove that tan 1 + x – 1– x 4 2 2 2 3 4 –3 Find the simplified form of cos cos x + sin x , where x ∈ –1 , 4 4