Question

in right angle triangle ABC, angle B=90° angle A and angle c are acute angles then find sine A and cos A​

Answer 1

Given in $∆ ABC, ∠B=90°$★

This given★$A+C=180 ° −90 ° =90°$

Now,

★$\tt sinA.cosC+cosA.sinC$★

★$\tt =sin(A+C)$★

★$\tt =sin(90° )=1.$★