Question

NORTH Applied
If sin A = 4/5&cos B = 5/13where 0 <A, B < pi/2, find the values of
(i) sin (A+B) (i) cos (A+B) (iii) tan (A + B)​

Answer 1

Answer:

i) 56/65

ii)63/65

iii)56/33

Step-by-step explanation:

i) sin(a+b)=sinaxcosb+cosaxsinb

ii) cos(a+b)=cosaxcosb+sinaxsinb

iii)tan(a+b)=tana+tanb/(1-tanaxtanb)