Question
Statements: All buildings are chalks. No chalk is a
toffee. Conclusions: (I) No building is a toffee. (II) All chalks are buildings. Read the given statement(s) and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusions logically follow(s) from the statement(s).Solution

If tanθ – cotθ = a and cosθ + sinθ = b, then (b2 –1)(a2 + 4) = ?
If cos4 B - sin4 B =
In a right triangle ABC, angle B = 90°. If tan A = 3/4 and the length of the hypotenuse is 25 cm, find the area of the triangle.
A 16-meter-long rope is stretched from the ground to the top of a house, forming a 30° angle with the ground. Determine the height of the house.
What is the value of cosec30° sec30°?
If (tan 8θ · tan 2θ = 1), then find the value of (tan 10θ).
Simplify the following trigonometric expression:
14 tan 25° cot 65° − 6 cos 39° sec 51°If tan θ + cot θ = 5, find the value of tan²θ + cot²θ.