If with , then the value of is
1
0
2
If in a triangle ABC, sinA = cosB then the value of cos C is
If the value of is (where ):
The value of is
If the value of is
If then the value of is
If and , then is equal to
ab
If x tan 60° + cos 45° = sec 45° then the value of (x2 + 1) is
x, y be two acute angles, x + y < 90° and sin (2x - 20°) = cos (2y + 20°), the value of tan (x + y) is
If a2sec2x - b2tan2x = c2 then the value of (sec2x + tan2x) is equal to (assume b2 ≠ a2)
B.