Prove the following (i) cos(π/2 + x) = - sinx (ii) sin(π/2 + x) = cosx - Sarthaks eConnect | Largest Online Education Community
Prove that: (sin(π + x) cos(π/2) + x)) tan(3π/2) - x) cot(2π - x))/(sin(2π - x) cos(2π + x) cosec(-x) sin((3π/2) - x))) = 1 - Sarthaks eConnect | Largest Online Education Community
![AP Calculus AB]: I don't understand how they got this? wouldn't the derivative of cos( pi /2 + h ) be -sin( pi/2 + h )? : r/HomeworkHelp AP Calculus AB]: I don't understand how they got this? wouldn't the derivative of cos( pi /2 + h ) be -sin( pi/2 + h )? : r/HomeworkHelp](https://www.ilemaths.net/img/forum_img/0271/forum_271737_1.jpg)
AP Calculus AB]: I don't understand how they got this? wouldn't the derivative of cos( pi /2 + h ) be -sin( pi/2 + h )? : r/HomeworkHelp
![Prove that: sin(pi+x)cos (pi2+x)tan (3pi2-x)cot(2pi-x)sin(2pi-x)cos(2pi-x) ( - x)sin (3pi2-x) = n pi + pi 4 where n∈ N Prove that: sin(pi+x)cos (pi2+x)tan (3pi2-x)cot(2pi-x)sin(2pi-x)cos(2pi-x) ( - x)sin (3pi2-x) = n pi + pi 4 where n∈ N](https://haygot.s3.amazonaws.com/questions/1609504_1665201_ans_13d0466d15454f85a744e48b20c675b6.jpeg)