If in `DeltaABC, angle A=90^(@)` and c, sin B cos B are rational numbers, then show a and b are rational .

If in DeltaABC, A =90^(@) and c, sin B and cos B are rational number, then

In Delta ABC , angle B = 90^(@) find the values of : sin A cos C + cos A sin C

if (log)_a x=b for permissible values of a and x then identify the statements which can be correct. (a) If a and b are two irrational numbers then x can be rational (b) if a is rational and b is irrational, then x can be rational (c) if a is irrational and b is rational, then x can be rational (d) If a and b are two rational numbers then x can be rational .

In Delta ABC , angle B = 90 ^(@) Evaluate : cosec A cos C - sin A sec C .

If A & B are two rational numbers and AB, A + B and A -B are rational numbers, then A/B is :

In Delta ABC , angle B = 90^(@) find the values of : cos A cos C -sin A sin C

If in a DeltaABC , c = 3b and C - B = 90°, then tanB=

If in a DeltaABC , c = 3b and C - B = 90°, then tanB=

If (log)_a x=b for permissible values of a and x , then identify the statement(s) which can be correct. (a)If a and b are two irrational numbers, then x can be rational. (b)If a is rational and b is irrational, then x can be rational. (c)If a is irrational and b is rational, then x can be rational. (d)if aa n d b are rational, then x can be rational.

If in a DeltaABC, sin A =sin^(2) B and 2 cos ^(2)A=3 cos ^(2) B, then the DeltaABC is