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Trigonometry Quiz
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If tanA=CotB, then A+B=
60°
90°
45°
55°
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if CosA+SinA=√2 CosA, then CosA-SinA=
2 SinA
SinA
√2 SinA
√3 SinA
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If tan2A=cot (A-18°), where 2A is an acute angle. Find the value of A
32°
36°
40°
44°
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value of sin10°sin50°sin70°
1/2
1/6
1
1/8
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value of √3cosec20°- sec20°
2
3
4
1
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