If sin B -1-2 then cos B -3-2- then find the value of 3 cos B -4 cos 3 B-

Sin B = 1/2 cos B = √(3)/2 3 cos B 4 cos^3 B =3×√(3)/2 4̸×√(3)/2̸×√(3)/2̸×√(3)/2 =3√(3)/2 3√(3)/2 =0 ...

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Range of Trigonometric Expressions

If sin B =1/2...

Question

If $s i n B = \frac{1}{2}$ then $c o s B = \frac{\sqrt{3}}{2}$ , then find the value of $3 c o s B - 4 c o s^{3} B$ .

Open in App

Solution

Suggest Corrections

Similar questions

sin B = \frac{1}{2}

3 cos B - 4 {cos}^{3} B ?

If (sin A)/(sin B) = √3/2 , (cos A)/(cos B) = √5/2, then find the values of tan A and tan B.

If $t a n A = \frac{1 - c o s B}{s i n B}$ , then find the value of tan 2A.

\frac{sin A}{sin B} = \frac{\sqrt{3}}{2}

\frac{cos A}{cos B} = \frac{\sqrt{5}}{2}, 0 < A, B < \frac{π}{2},

tan A + tan B

\frac{sin A}{sin B} = \frac{1}{3}

\frac{cos A}{cosB} = 2

{cot}^{2} B

Join BYJU'S Learning Program