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Suppose that a boat travels 10 km from t...

Suppose that a boat travels 10 km from the port towards east and then turns `60^(@)` to its left. If the boat travels further 8 km, how far from the port is the boat?

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The correct Answer is:
`2sqrt61km`
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FULL MARKS-TRIGONOMETRY-Exercise 3.12
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  8. cos 1^(@) + cos 2^(@) + cos 3^(@) + ….+ cos 179^(@) =

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  13. If cos ptheta + cos qtheta = 0 and if p ne q, then theta is equal to (...

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  14. If tan alpha and tan beta are the roots of x^(2) + ax + b = 0, then (s...

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  15. In a triangle ABC, sin^(2)A + sin^(2)B + sin^(2)C = 2, then the triang...

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  16. If f(theta) = |sin theta| + |cos theta|,theta in RR, then f(theta) is ...

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  17. (cos 6x + 6 cos 4x + 15 cos 2x + 10)/(cos 5x + 5 cos 3x + 10 cos x ) i...

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  18. The triangle of maximum area with constant perimeter 12m

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  19. A wheel is spinning at 2 radians/second. How many seconds will it take...

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  20. If sin alpha + cos alpha = b, then sin 2alpha is equal to

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  21. In a DeltaABC, if (i)sin (A)/(2) sin"" (B)/(2) sin"" (C )/(2) gt 0 (...

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