Solve the following equation for A, if sec 2A = 2

Sum

According to the question,

We have,

sec 2A = 2

sec 2A = sec 60°

2A = 60°

A = 30°

shaalaa.com

Trigonometric Equation Problem and Solution

Is there an error in this question or solution?

State for any acute angle θ whether cos θ increases or decreases as θ increases.

Solve for x : cos `(x/(2)+10°) = (sqrt3)/(2)`

If θ < 90°, find the value of: sin²θ + cos²θ

If ΔABC is a right triangle such that ∠C = 90°, ∠A = 45° and BC =7units, find ∠B, AB and AC.

In a rectangle ABCD, AB = 20cm, ∠BAC = 60°, calculate side BC and diagonals AC and BD.

Find the value 'x', if:

Find the value of 'y' if `sqrt(3)` = 1.723.
Given your answer correct to 2 decimal places.

Find x and y, in each of the following figure:

Evaluate the following: `(tan12°)/(cot78°)`

If tan4θ = cot(θ + 20°), find the value of θ if 4θ is an acute angle.