![If cos 25 degrees + sin 25 degrees = k, then cos 20 degrees is equal to - Maths - Trigonometric Functions - 12700435 | Meritnation.com If cos 25 degrees + sin 25 degrees = k, then cos 20 degrees is equal to - Maths - Trigonometric Functions - 12700435 | Meritnation.com](https://s3mn.mnimgs.com/img/shared/content_ck_images/ck_361d4472dc7f0c6e80c9cd61fa5ba933.png)
If cos 25 degrees + sin 25 degrees = k, then cos 20 degrees is equal to - Maths - Trigonometric Functions - 12700435 | Meritnation.com
![Without using trigonometric tables, find the value of the following expression:sec 90° θ cosec θ tan 90° θ cot θ + cos2 25° + cos2 65° 3 tan 27° tan 63° Without using trigonometric tables, find the value of the following expression:sec 90° θ cosec θ tan 90° θ cot θ + cos2 25° + cos2 65° 3 tan 27° tan 63°](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1707467/original_123423.png)
Without using trigonometric tables, find the value of the following expression:sec 90° θ cosec θ tan 90° θ cot θ + cos2 25° + cos2 65° 3 tan 27° tan 63°
![Question Video: Using a Calculator to Evaluate an Expression Involving Values of Trigonometric Functions | Nagwa Question Video: Using a Calculator to Evaluate an Expression Involving Values of Trigonometric Functions | Nagwa](https://media.nagwa.com/513173829639/en/thumbnail_l.jpeg)
Question Video: Using a Calculator to Evaluate an Expression Involving Values of Trigonometric Functions | Nagwa
![Solve this: Q) sin25 cos65 +cos25 sin 65 - Maths - Introduction to Trigonometry - 12256855 | Meritnation.com Solve this: Q) sin25 cos65 +cos25 sin 65 - Maths - Introduction to Trigonometry - 12256855 | Meritnation.com](https://s3mn.mnimgs.com/img/shared/content_ck_images/ck_5a45ca57af280.jpeg)
Solve this: Q) sin25 cos65 +cos25 sin 65 - Maths - Introduction to Trigonometry - 12256855 | Meritnation.com
![The distance between the points (a cos 25°,0) and (0, a cos 65°) is - YOUR ANSWER SOLUTION Distance between given two points = v(a cos 25° – 0)2 + (0 – The distance between the points (a cos 25°,0) and (0, a cos 65°) is - YOUR ANSWER SOLUTION Distance between given two points = v(a cos 25° – 0)2 + (0 –](https://toppr-doubts-media.s3.amazonaws.com/images/4700975/127014c1-8f46-4879-9af2-7ff31cf8b05b.jpg)
The distance between the points (a cos 25°,0) and (0, a cos 65°) is - YOUR ANSWER SOLUTION Distance between given two points = v(a cos 25° – 0)2 + (0 –
![begin{array} { r l } { d } & { sin 25 } { Rightarrow } & { sin ( 90 - 65 ) Rightarrow cos 657 - ( 2 ) } { } & { cos ( 90 - 25 ) } { } & { cos ( 90 - 25 ) } { cos } & { ( 90 - 65 ) } end{array} )" begin{array} { r l } { d } & { sin 25 } { Rightarrow } & { sin ( 90 - 65 ) Rightarrow cos 657 - ( 2 ) } { } & { cos ( 90 - 25 ) } { } & { cos ( 90 - 25 ) } { cos } & { ( 90 - 65 ) } end{array} )"](https://toppr-doubts-media.s3.amazonaws.com/images/3509149/7cc9f039-f5e6-4f7a-b174-a7bfe1d62bb1.jpg)
begin{array} { r l } { d } & { sin 25 } { Rightarrow } & { sin ( 90 - 65 ) Rightarrow cos 657 - ( 2 ) } { } & { cos ( 90 - 25 ) } { } & { cos ( 90 - 25 ) } { cos } & { ( 90 - 65 ) } end{array} )"
![If cos 25 degrees + sin 25 degrees = k, then cos 20 degrees is equal to - Maths - Trigonometric Functions - 12700435 | Meritnation.com If cos 25 degrees + sin 25 degrees = k, then cos 20 degrees is equal to - Maths - Trigonometric Functions - 12700435 | Meritnation.com](https://s3mn.mnimgs.com/img/shared/content_ck_images/ck_441ceb490197f6538a641649638ec09c.png)