If a + b = c where a,b>0 each lying between 0 and π/2 and c is a constant, find the maximum or minimum value of_

(a) sina + sina (b)sinasinb (c)tana + tanb

V = | V | v^

V = 10 r^

V = 10 ( r / | r | )

V= 10 (-4i^+3j^/✓(((-4)^(2))+((3)^(2))) )

V= 10 (-4i^+3j^/ 5)

V= 2(-4i^+3j^)

V= -8i^ + 6j^

Regards

Arun (askIITians forum expert)