Question

the value
1
then
o
C
TE
Sin (0 - 300)
Sin (0 + 30
0 + 30*) is
2
of 앙​

Answer 1

Answer:

sorry i dont know and i only dont know sin cos tan etc. please forgive

Answer 2

Answer:

OPTION=A

Step-by-step explanation:

sin α.sec(30∘+α)=1Shortcutmethod:

Put α value between 0∘ to 60∘If α=30∘⇒sin 30∘.sec(30∘+30∘)=1⇒sin 30∘.sec60∘=1⇒12×2⇒11=1(Satisfy)So,α=30∘=sinα+cos2α=sin30∘+cos2×30∘=sin30∘+cos60∘=12+12=1