Question 25

ΔXYZ is right angled at Y. If $$sinX = \frac{4}{5}$$, then what is the value of $$cos Z$$ ?

Solution

Given : $$\sin X$$ = $$\frac{4}{5}$$

Also, $$\sin X=\frac{YZ}{XZ}=\frac{4}{5}$$

Let YZ = 4 cm and XZ = 5 cm

To find : $$\cos Z=\frac{YZ}{XZ}$$

= $$\frac{4}{5}$$

=> Ans - (C)

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