Express tan59 + cosec 85 in the terms of trigonometric ratios of angles between 0 +45
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Answer:
We have,
cot(90
0
−θ)=tanθ and cos(90
0
−θ)=sinθ
cot85
0
=cot(90
0
−5
0
)=tan5
0
cos75
0
=cos(90
0
−15
0
)=sin15
0
∴cot85
0
+cos75
0
=tan5
0
+sin15
0
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