write the principal value of tan^-1 [sin(-π/2)] - 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
![trigonometric polynomials - Solutions of equation $\sin \pi x_1\sin \pi x_2=\sin \pi x_3\sin \pi x_4$ - MathOverflow trigonometric polynomials - Solutions of equation $\sin \pi x_1\sin \pi x_2=\sin \pi x_3\sin \pi x_4$ - MathOverflow](https://i.stack.imgur.com/eBuTx.jpg)
trigonometric polynomials - Solutions of equation $\sin \pi x_1\sin \pi x_2=\sin \pi x_3\sin \pi x_4$ - MathOverflow
![sin pi/3 __ __ pi/6 = 1/2(sin pi/2 + sin pi/6) I think I'm just supposed to fill in the blank? - Brainly.com sin pi/3 __ __ pi/6 = 1/2(sin pi/2 + sin pi/6) I think I'm just supposed to fill in the blank? - Brainly.com](https://us-static.z-dn.net/files/da3/5b6abc35940083036d7c98aba2550869.png)
sin pi/3 __ __ pi/6 = 1/2(sin pi/2 + sin pi/6) I think I'm just supposed to fill in the blank? - Brainly.com
![Find the exact value of arctan (sin (pi divided by two)). For full credit, explain your reasoning. - Brainly.com Find the exact value of arctan (sin (pi divided by two)). For full credit, explain your reasoning. - Brainly.com](https://us-static.z-dn.net/files/dad/deba66a01f1e5d13573df1fbe4ef6e96.jpg)