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Rohangrr
 2 years ago
Trigonometry
Rohangrr
 2 years ago
Trigonometry

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Rohangrr
 2 years ago
Best ResponseYou've already chosen the best response.1The value of the trigonometrical expression \[(4\sin2\ 60^o + 3\tan2\ 30^o – 8 \sin45^ocos 45^o) \ is\] @kropot72

kropot72
 2 years ago
Best ResponseYou've already chosen the best response.4Just substitute these values: \[\sin ^{2}60=(\frac{\sqrt{3}}{2})^{2}\] \[\tan ^{2}30=(\frac{1}{\sqrt{3}})^{2}\] \[\sin 45=\cos 45=\frac{ \sqrt{2}}{2}\]

kropot72
 2 years ago
Best ResponseYou've already chosen the best response.4What part didn't you get? You just need to plug in the values that I gave and simplify.

kropot72
 2 years ago
Best ResponseYou've already chosen the best response.4\[(4\times \frac{3}{4})+\frac{3}{3}8(\frac{\sqrt{2}}{2}\times \frac{\sqrt{2}}{2})=?\]

kropot72
 2 years ago
Best ResponseYou've already chosen the best response.43 + 1  4 = ? Do you want to know how the exact values for the trig ratios are derived?

Khushal_Shah
 2 years ago
Best ResponseYou've already chosen the best response.0@Rohangrr , kropot72 basically gave you the answer, his work is spot on. If you follow each of this work from each post, you'll get to the right answer, which, as he/she said in their last response, is 0

kropot72
 2 years ago
Best ResponseYou've already chosen the best response.4dw:1365502988183:dw dw:1365502674259:dw
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