Recommended Questions
- Prove that: cos 20^0cos 100^0+cos 100^0cos 140^0-\ cos 140^0cos 200^0=...
Text Solution
|
- Evaluate : (sin50^0)/(cos40^0)+(cos e c40^0)/(sec50^0)-4cos50^0cos e ...
Text Solution
|
- Prove that: cos 10^0cos30^0cos 50^0cos 70^0=3/(16)
Text Solution
|
- Evaluate : (sin50^0)/(cos40^0)+(cos e c40^0)/(sec50^0)-4cos50^0cos e ...
Text Solution
|
- Prove that: cos510^0cos 330^0+sin 390^0cos 120^0=-1.
Text Solution
|
- Prove that: t a n 720^0-cos 270^0-sin 150^0cos 120^0=1/4
Text Solution
|
- Prove that: sin600^0cos 390^0+cos 480^0sin 150^0=-1
Text Solution
|
- Evaluate the following: cos 47^0cos 13^0-sin 47^0 sin 13^0
Text Solution
|
- Evaluate the following: cos 80^0cos 20^0+ sin 80^0 sin 20^0
Text Solution
|