Introduction to...

In a right triangle ABC, right-angled at B, cot² A = . What is the value of cos A?

If a = (cosec θ + cot θ) and b = (cosec θ - cot θ), what is the product of a and b?

In a right triangle ABC, right angled at B, sin A = $\frac{1}{\sqrt{2}}$. What is the value of tan A?

If cos(90° - $\theta$). sec $\theta$. tan(90° -$\theta$). cosec $\theta$ = x, what is the value of x?

In a right triangle PQR, right-angled at Q, sin P = . What is the value of cos² P?

What is the value of cot² A tan² A?

Simplify: cos 55°. cosec 35° - 1

If cos (A + B) = cos A cos B - sin A sin B, what is the value of cos 120°?

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

What is the value of ^{= ?}

If tanθ= (x sinϕ) / (1−xcosϕ) and, tan ϕ = (y sin θ)/ (1−y cos θ) then x/y =?

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

What is the value of sin 60°. sin 30° + cos 60°. cos 30° - ?

For what value of $\theta$ is $\sin \theta =\frac{1}{sec \theta }$?

What is the value of cosec$\theta$. cot$\theta$?