Math, asked by Anonymous, 4 months ago

sin77°/cos 13°+ sin^2 42°-cos^2 48-3cot^2 45

Answers

Answered by ujjwal26200

1

sin77/cos13+(sin42)^2+(sin48)^2-3(tan45)^2

=sin77/cos77+(sin42)^2+(sin42)^2-3

=1+1-3

=-1

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