Prove that cos10°.cos30°. cos50°.cos 70° = 3/16 - Sarthaks eConnect | Largest Online Education Community
![What is the value of sin(10)cos(20)sin(30)cos(40)sin(50)cos(60)sin(70)cos(80)? Not in radians, in degrees. | Socratic What is the value of sin(10)cos(20)sin(30)cos(40)sin(50)cos(60)sin(70)cos(80)? Not in radians, in degrees. | Socratic](https://useruploads.socratic.org/IK25ycsASbety18tGT8x_New%20Doc%202018-01-06_1.jpg)
What is the value of sin(10)cos(20)sin(30)cos(40)sin(50)cos(60)sin(70)cos(80)? Not in radians, in degrees. | Socratic
![66 \( \frac { \cos 10 ^ { \circ } + \sin 10 ^ { \circ } } { \cos 10 ^ { \circ } - \sin 10 ^ { \circ } } \) is equal to 66 \( \frac { \cos 10 ^ { \circ } + \sin 10 ^ { \circ } } { \cos 10 ^ { \circ } - \sin 10 ^ { \circ } } \) is equal to](https://d2rrqu68q7r435.cloudfront.net/images/3935293/6cdabe04-f9c5-4955-ae32-5a5560e2997b.jpg)
66 \( \frac { \cos 10 ^ { \circ } + \sin 10 ^ { \circ } } { \cos 10 ^ { \circ } - \sin 10 ^ { \circ } } \) is equal to
The value of cos^2 10º – cos10º cos50º + cos^2 50º is : - Sarthaks eConnect | Largest Online Education Community
![Prove cos 70* cos 10 + sin 70* sin 10 =1/2 - Maths - Trigonometric Functions - 13151333 | Meritnation.com Prove cos 70* cos 10 + sin 70* sin 10 =1/2 - Maths - Trigonometric Functions - 13151333 | Meritnation.com](https://s3mn.mnimgs.com/img/shared/content_ck_images/ck_5bcc3eeb9003c.jpeg)