please help me by solving 7, 8, and 9. these are sums from class 11 tuitions.
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Abhimanyu Dhar , 3 Years ago
Grade 9
Trigonometry> please help me by solving 7, 8, and 9. th...
2 Answers
Harshit Singh
Last Activity: 3 Years ago
Dear Student
7 . Tan x = √3 is for 60,(180+60) i.e 60 and 240 degrees
8. cos x= √3/2 is true for 30,(360-30),360+30,720-30.
9. sinx= +1/√2 or –1/√2 is true for n(pi)
(pi/4)
Thanks
Debarati
Last Activity: 3 Years ago
7. tan theta = root 3 when theta = 60
8. 2 cos theta = root 3
=> cos theta = (root 3)/2
=> theta = 30
9. 2 sin^2 theta = 1
=> sin^2 theta = 1/2
=> sin theta = 1/root 2
=> theta = 30
8. 2 cos theta = root 3
=> cos theta = (root 3)/2
=> theta = 30
9. 2 sin^2 theta = 1
=> sin^2 theta = 1/2
=> sin theta = 1/root 2
=> theta = 30
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