Whakaoti i te cos(pi/2)+{left(cos(pi/4)right)}^2

$$\cos ( \frac{ \pi }{ 2 } ) + { \left( \cos ( \frac{ \pi }{ 4 } ) \right) }^{ 2 }$$

Aromātai

$$\frac{1}{2}=0.5$$

Ngā Upane Otinga

Get the value of \cos(\frac{\pi }{2}) from trigonometric values table.

$$0+\left(\cos(\frac{\pi }{4})\right)^{2}$$

Get the value of \cos(\frac{\pi }{4}) from trigonometric values table.

$$0+\left(\frac{\sqrt{2}}{2}\right)^{2}$$

Kia whakarewa i te \frac{\sqrt{2}}{2} ki tētahi taupū, me whakarewa tahi te taurunga me te tauraro ki te taupū kātahi ka whakawehe.

$$0+\frac{\left(\sqrt{2}\right)^{2}}{2^{2}}$$

Ko te tau i tāpiria he kore ka hua koia tonu.

$$\frac{\left(\sqrt{2}\right)^{2}}{2^{2}}$$

Ko te pūrua o \sqrt{2} ko 2.

$$\frac{2}{2^{2}}$$

Tātaihia te 2 mā te pū o 2, kia riro ko 4.

$$\frac{2}{4}$$

Whakahekea te hautanga \frac{2}{4} ki ōna wāhi pāpaku rawa mā te tango me te whakakore i te 2.

$$\frac{1}{2}$$

Tauwehe

$$\frac{1}{2} = 0.5$$