Introduction to...

What will be the value of if = 1?

(2 + ) - (2 + sin²) = __________.

In a right triangle PQR, right-angled at Q, sin P = and cos P = . What is the value of sec P cosec P?

Simplify:

Find the value of cosθ + if sec²θ - 1 = (1 + - )².

What is the value of cos 0° . sin 25° . sec 85° . tan 45° . cosec 5° . cos 65° . sin 90°?

If and , then z is equal to

If 2tany – tan²y = 1, then equals

What is the value of (A + B) if tan(C + 2B) = and sin(2A - C) =^_, here each of A, B and C measures less than 90°?

If sinθ - cotθ = 1 and cosec²θ = 1, then cosθ is equal to

Find the value of.

Evaluate if cos = 0

What is the value of q² - p² - r² if p = acosecθ cotθ', q = acosecθ cosecθ' and r = acosecθ?

If = 3, = 2, then

What is the value of 'g' in cot²θ - cos²θ - g = (tanθ - cotθ)² - (secθ - cosθ)²?

If tanA : secA = 11 : 9, then the value of is

What is the value of

If X + Y = 90°, thenis equal to

If sin + cos = a and sin – cos = b, then 4a²b² + (b² - a²)² equals

In a triangle PQR, ∠Q = 90° and cosecR =. Find the value of .

What is the value of (x² - y²) - 4sec tan if x = sec + tan and y = sec - tan?

Choose the INCORRECT statement(s).

I. The expression is dependent on .

II. If sin + cos = 0, then .

Fill in the blanks:

A. = __M__

B. tan² - = _____N______

C. If l = x²sin³ and m = y² cos³ , then the value of is _____O_____.

If , and , then the value of is

Which of the following statements is/are true?

(a) = 5

(b) If A + B = 90°, then.