Points D, E are taken on the side BC
of a △ ABC, such that BD=DE=EC.
If ∠BAD=x, ∠DAE=y, ∠EAC=z,
then the value of ((sin (x+y) sin(y+z))/(sin x sin z))
is equal to
During a sales period a magazine offers a t% discount
For clients in possession of the fidelity card, an extra discount
of (t+5)% is offered.
A client benefits from these two discounts and pays
150 ε for an article whose initial price is 250ε
(i) Show that t is solution to the equation
250×(1−(t/(100)))×(1−((t+5)/(100)))=150
(ii) Solve this equation and deduce the value of t.
A wedge has a weight of 9kg . And a block has a weight of 2kg
If the block starts sliding with an angle of 45° with the
horizontal then what is accelaration of the wedge?
1−1+1−1+1−1+1−1+.....=(1/2) {But it diverges
1+1+1+1+1+1+1+......=−(1/2) {But it diverges
1+2+4+8+16+.....=−1 {But it diverges
1+2+3+4+5+6+7=−(1/(12)) {But it diverges
1−2+4−8+.....=(1/3) {But it diverges
1−2+3−4+5−6+.....=(1/4) {Is it a divergent?????