Question

$if \: \tan \: a = \frac{5}{12} \: evaluate \: 3 \sin \: a - 2 \cos \: a$

Answer 1

tan a=5/12=p/b
sin a=p/h=5/13
cos a=12/13
3sina-2cos a=3×5/13-2×12/13
=15/13 -24/13=15-24/13=-9/13
is your answer

Answer 2

Answer:

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