If , the value of (x + y) is
15°
16°
24°
The value of tan 11° tan 17° tan 79° tan 73° is
0
1
(cos A + sin A)2 + (cos A - sin A)2 equals to
2
What is the value of ?
If cos C - cos D = x, then the value of x is
Find the value of
3
B.
The value of the following is:
If tan A + cot A = 2, then the value of is
4
If then the value of is
If then find the integral value of is