Find the numerical value of the following :4sin2 30° + 3 tan 30° – 8 sin 45° cos 45°

Q3 of 268 Page 4

Find the numerical value of the following :
4sin² 30° + 3 tan 30° – 8 sin 45° cos 45°

We know that,

Now putting the value, we get

= 1 + 1 – 4

= -2

Find the numerical value of the following :

sin² 60° – cos² 60°

Find the numerical value of the following :

2sin²30° – 3cos² 45° + tan² 60ׄ°

Find the numerical value of the following :

sin 90° + cos 0° + sin 30° + cos 60°