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If the area of an acute-angled triangle ...

If the area of an acute-angled triangle is `75 m^(2)` and two of its sides are 20 m and 15m, then the angle between them is

A

`30^(@)`

B

`60^(@)`

C

`150^(@)`

D

none of these

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The correct Answer is:
A
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MARVEL PUBLICATION-TRIGONOMETRIC FUNCTIONS-MULTIPLE CHOICE QUESTIONS - PART - A : BUILDING-UP THE BASE
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  12. If, in Delta ABC, a = 2b and A = 3B, then A :

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  13. If Delta ABC, is right angled at C, then: 4s (s - a)(s - b)(s-c) = ....

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  14. If sin (A + B + C) = 1, tan (A - B) = 1//sqrt(3) and "sec" (A + C) = 2...

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