[tex]\red{\fbox{\tt{Question}}}[/tex]
Find the value of the below Trigonometric questions :-
i) Sin 78° Cos18° - Cos78° Sin18° = ?
ii) Cos47° Cos13° - Sin47°-Sin13° = ?
iii) [tex]CosA=\frac{-12}{13} ..and..Cos\frac{24}{7} \\[/tex]
Here A lies in second and B lies in third quadrant.
find Sin(A+B) = ?
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cos47.
Sin 78° Cos18° - Cos78° Sin18° = ?
ii) Cos47° Cos13° - Sin47°-Sin13° = ?
iii) [tex]CosA=\frac{-12}{13} ..and..Cos\frac{24}{7} \\[/tex]
Here A lies in second and B lies in third quadrant.
find Sin(A+B) = ?