Sin 77 / cos 13 + sin square 42 + sin square 48- 3 tan square 45
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Answered by
7
sin77/cos13+(sin42)^2+(sin48)^2-3(tan45)^2
=sin77/cos77+(sin42)^2+(sin42)^2-3
=1+1-3
=-1
=sin77/cos77+(sin42)^2+(sin42)^2-3
=1+1-3
=-1
Anonymous:
Why did you add all?
In the question it is minus 3 tan square 45.
oops sorry
Answered by
9
Here is your answer.
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Thnx .
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