Question

sin(60+30)=sin60 cos30+ sin30cos60​

Answer 1

Answer:

sin(60+30)=sin60 cos30+ ssin30cos60

sin90=sin60cos30+sin30cos60

1=√3/2×√3/2+1/2×1/2

1=3/4+1/4

1=3+1/4

1=4/4

1=1

Answer 2

Step-by-step explanation:

_p__(60+30)= _p____60 ___b__30+__p_30

h. h h. h

__b__60

h

_p_90=_2p__90. _2b___90

h. 2h. 2h