Question

In triangle ABC is right angled at B BC is equal to 7 cm and ac minus a b is equal to 1 cm find the value of Cos A + sin a​

Answer 1

Answer:

Abc is a right triangle right angled at b if bc=7cm and ... 2ab=48 ab=24 ac=1+ab=1+24=25 cos a=ab/ac=24/25 sin ...

ac-ab=1cm ac= 1+abby Pythagoras Theoremac^2=ab^2+bc^2(1+ab)^2=ab^2 +(7)^21+ab^2+2ab= ab^2+49ab^2-ab^ .