Question

Express root 3 cos 25 + sin 25 by 2 as a sign of the angle​

Answer 1

Answer:

Step-by-step explanation:

You've to know the most basic values of sines and cosines

as sin60°=√3/2

&cos60°=1/2

it has been used directly in the solution!

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Answer 2

Given : $\frac{\sqrt{3}\cos 25^\circ+\sin 25^\circ}{2}$

Step-by-step explanation:

$\frac{\sqrt{3}\cos 25^\circ+\sin 25^\circ}{2}\\\\\frac{\sqrt{3}}{2}\cos 25^\circ+\frac{1}{2}\sin 25^\circ$

we know that

$\frac{\sqrt{3}}{2}= \sin 60^\circ \\\\\frac{1}{2}=\cos 60^\circ$

$\sin 60^\circ\cos 25^\circ+\cos 60^\circ\sin 25^\circ\\\\using\\\\\sin A\cos B +\cos A\sin B= \sin (A+B)\\\\\sin (60 + 25)\\\\\sin 85^\circ$

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https://brainly.in/question/11001463