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Eamcet Mathematics
Trigonometry : Multiple And Submultiple Angles

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If θ and ∅ are angles in the 1st quadrant such that tanθ=1/7 and sin∅=1/√10 .Then

A. θ+2∅=90°

B. θ+2∅=60°

C. θ+2∅=30°

D. θ+2∅=45°

E. None of the above

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Correct choice: D

Explanation:

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Eamcet Mathematics Trigonometry : Multiple And Submultiple Angles

Eamcet Mathematics
Trigonometry : Multiple And Submultiple Angles