Trigonometrical...

sin²28° + sin² 62° + tan² 38° - cot²52° + ¼ sec²30° =

Evaluate

The value of cos² 17°- sin² 73° will be:

Find the value of

Find the value of (cos θ + sin θ)² + (cos θ − sin θ)²

Find the value of

If tan² 45° − cos² 30° = x sin 45°. cos 45°, then x =

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If the angle of depression of an object from a 75 m high tower is 30°, then the distance of the object from the tower is:

If a pole 6 m high cast shadow 2 m long on the ground, then the sun’s elevation is:

Find the value of

From a point on the ground the angle of elevation of the bottom and top of a water tank kept at the top of 20m high tower are 45° and 60° respectively. Find the height of the water tank.

Evaluate

(1 + tan A)² + (1 - tan A)² =

Evaluate