Why does cos(90 - x) = sin(x) and sin(90 - x) = cos(x)?
By A Mystery Man Writer
Description
Note that the image below is only for x in Q1 (the first quadrant). If you wish you should be able to draw it with x in any quadrant. Definition of sin(x) (side opposite angle x)//(hypotenuse) Definition of cos(90^@ -x) (side adjacent to angle (90^@-x))//(hypotenuse) but (side opposite angle x) = (side adjacent to angle (90^@-x) Therefore sin(x) = cos(90^@ -x) Similarly cos(x) = sin(90^@ - x)
![Why does cos(90 - x) = sin(x) and sin(90 - x) = cos(x)?](https://d2nchlq0f2u6vy.cloudfront.net/cache/64/9b/649b153cf313318dcc084355a13712af.jpg)
Give the coordinates of each image. $$ D _ { rac { 1 } {
![Why does cos(90 - x) = sin(x) and sin(90 - x) = cos(x)?](https://d2nchlq0f2u6vy.cloudfront.net/18/11/05/725bb38e4ae22d68a9acf30617f08b23/ffc9953e5c731fb977308f499dd5a572/image_scan.png)
Trace triangle JKL and point P. Draw the dilation of triangl
![Why does cos(90 - x) = sin(x) and sin(90 - x) = cos(x)?](https://d2nchlq0f2u6vy.cloudfront.net/15/09/27/0a17ffe504d083b94d3d6d05d29d24a1/b4c29aebfcea921e7608a5d58b71b182/lateximg_large.png)
Fill in the blank with the appropriate direction (left, righ
![Why does cos(90 - x) = sin(x) and sin(90 - x) = cos(x)?](https://d2nchlq0f2u6vy.cloudfront.net/cache/c8/a5/c8a5311396364c06fa04595bbe2902f9.jpg)
Fill in the blank with the appropriate direction (left, righ
![Why does cos(90 - x) = sin(x) and sin(90 - x) = cos(x)?](https://d2nchlq0f2u6vy.cloudfront.net/questions/q-aaf57ea0f-2a72-4c85-80f3-b561193ed57f.png)
Trace triangle JKL and point P. Draw the dilation of triangl
![Why does cos(90 - x) = sin(x) and sin(90 - x) = cos(x)?](https://d2nchlq0f2u6vy.cloudfront.net/18/12/18/fc9a872f6c7f69156d77e50160717260/7a6b67a01bfc066dbb0f90b296d167f9/lateximg_large.png)
Give the coordinates of each image. $$ D _ { rac { 1 } {
Solved SSC CHSL 2 July 2019 Shift-2 Paper With Solutions PDF, PDF, Interest
![Why does cos(90 - x) = sin(x) and sin(90 - x) = cos(x)?](https://d2nchlq0f2u6vy.cloudfront.net/cache/ed/fb/edfba486f9985ffe5b1b850ec44e2ea5.jpg)
Give the coordinates of each image. $$ D _ { rac { 1 } {
Solved SSC CHSL 2 July 2019 Shift-2 Paper With Solutions PDF, PDF, Interest
Solved SSC CHSL 2 July 2019 Shift-2 Paper With Solutions PDF, PDF, Interest
![Why does cos(90 - x) = sin(x) and sin(90 - x) = cos(x)?](https://d2nchlq0f2u6vy.cloudfront.net/cache/83/8d/838d38533019f380b5e01c36d196fbd6.jpg)
Give the coordinates of each image. $$ D _ { rac { 1 } {
![Why does cos(90 - x) = sin(x) and sin(90 - x) = cos(x)?](https://useruploads.socratic.org/UvK1p61zTsCJrLLcLoVP_sin-cos.gif)
Why does cos(90 - x) = sin(x) and sin(90 - x) = cos(x)?
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