Question

Evaluate: cos²30° sin⁴45.cos 90°.​

Answer 1

Answer:

3/16

Step-by-step explanation:

When we do the square of cos 30° we get 3/4 and then multiply it to 1/4

Answer 2

$\huge \red{\mathfrak{solution}}$

To evaluate :

$cos ^{2} 30 \: {sin}^{4} 45 \: cos90$

As we know that :

• cos30° = √3/2

•sin45°= 1/√2

and

•cos 90° = 0

Then put the value :

$\rightarrow { (\frac{ \sqrt{3} }{2}) }^{2} ( \frac{1}{ \sqrt{2}})^{4} (0) \\ \\ \rightarrow \: 0$

Hence the value is

$\huge\bold \: \boxed{0}$