![Prove That: Cos (Pi/4 Xx X) Cos (Pi/4 - Y) - Sin (Pi/4 - X)Sin (Pi/4 - Y) = Sin (X + Y) - Mathematics | Shaalaa.com Prove That: Cos (Pi/4 Xx X) Cos (Pi/4 - Y) - Sin (Pi/4 - X)Sin (Pi/4 - Y) = Sin (X + Y) - Mathematics | Shaalaa.com](https://www.shaalaa.com/images/_4:9e9adbf8eb4b4a2eb5980138ec66ee7d.png)
Prove That: Cos (Pi/4 Xx X) Cos (Pi/4 - Y) - Sin (Pi/4 - X)Sin (Pi/4 - Y) = Sin (X + Y) - Mathematics | Shaalaa.com
![Prove that : sin (pi / 4 + x ) sin ( pi / 4 - x ) = 1/2 - Maths - Trigonometric Functions - 14519025 | Meritnation.com Prove that : sin (pi / 4 + x ) sin ( pi / 4 - x ) = 1/2 - Maths - Trigonometric Functions - 14519025 | Meritnation.com](https://s3mn.mnimgs.com/img/shared/content_ck_images/ck_5eb58adeecb0c.jpeg)
Prove that : sin (pi / 4 + x ) sin ( pi / 4 - x ) = 1/2 - Maths - Trigonometric Functions - 14519025 | Meritnation.com
If θ is an acute angle, then find (i) sin((π/4) - (θ/2)), when sin θ = 1/25 (ii) cos((π/4) + (θ/2)), when sin θ = 8/9 - Sarthaks eConnect | Largest Online Education Community
![Find the value of the Trigonometric function: (a) \sin(\frac{5\pi}{12}) \\(b) \cos(\frac{\pi}{12}) | Homework.Study.com Find the value of the Trigonometric function: (a) \sin(\frac{5\pi}{12}) \\(b) \cos(\frac{\pi}{12}) | Homework.Study.com](https://homework.study.com/cimages/multimages/16/trigo-values33047689330855389.png)
Find the value of the Trigonometric function: (a) \sin(\frac{5\pi}{12}) \\(b) \cos(\frac{\pi}{12}) | Homework.Study.com
![Values of trigonometric functions of arcs pi/6 pi/4 and p/3, The values of the trigonometric functions of arcs that are multipliers of 30 degrees (pi/6) and 45 degrees (pi/4 Values of trigonometric functions of arcs pi/6 pi/4 and p/3, The values of the trigonometric functions of arcs that are multipliers of 30 degrees (pi/6) and 45 degrees (pi/4](http://www.nabla.hr/TrigFValuesT.gif)