(C+D)/(C-D)
Find the value of x, given sin C + sin D = x ?
- $$2\sin\left(\frac{C+D}{2}\right)\sin\left(\frac{C-D}{2}\right)$$
- $$2\cos\left(\frac{C+D}{2}\right)\cos\left(\frac{C-D}{2}\right)$$
- $$2\sin\left(\frac{C-D}{2}\right)\cos\left(\frac{C+D}{2}\right)$$
- $$2\sin\left(\frac{C+D}{2}\right) \cos \left(\frac{C-D}{2}\right)$$
solve sin75° + sin15° ?
- √6/2
- √6
- √3/2
- √3
solve sinα – sinβ ?
solve ?
- -13/85
- -13/45
- 13/85
- 32/45
solve ?
- -13/45
- 13/85
- 32/45
- 84/85
solve ?
- (√6 – √2 ) / 4
- (√6 – 1 ) / 4
- (√5 – √2 ) / 4
- (√6 + √2 ) / 4
solve ?
- ½
- ¾
- ¼
- 1
solve ?
- Not Defined
- 1
- 0
- √3
solve ?
- -1
- 1
- -2
- 0