Trigonometrical Equations
normal

$x$ ની કેટલી કિમત માટે $sin2x + sin4x = 2$ થાય 

A

$0$

B

$1$

C

અનત 

D

આમાંથી એક પણ નહીં 

Solution

$\sin 2 x+\sin 4 x=2$

$\sin 2 x=1, \sin 4 x=1$

$2 \mathrm{x}=\mathrm{n} \pi+(-1)^{\mathrm{n}} \frac{\pi}{2}, 4 \mathrm{x}=\mathrm{m} \pi+(-1)^{\mathrm{m}} \frac{\pi}{2}$

$x=\frac{n \pi}{2}+(-1)^{n} \frac{\pi}{4}, \quad x=\frac{m \pi}{4}+(-1)^{m} \frac{\pi}{8}$

Standard 11
Mathematics

Similar Questions

Start a Free Trial Now

Confusing about what to choose? Our team will schedule a demo shortly.