Question
 If sec theta - tan theta = 1/4, then sec theta + tan
theta is:Solution
We know: (sec theta - tan theta)(sec theta + tan theta) = 1 Given: sec theta - tan theta = 1/4 So, 1/4 x (sec theta + tan theta) = 1 sec theta + tan theta = 4
- Find the value of sin²10° + sin²80° + cos²15° + cos²75°.
Simplify the following trigonometric expression:
14 tan 25° cot 65° − 6 cos 39° sec 51°If cos2B = sin(1.5B + 20o), then find the measure of 'B'.
- If cos2B = sin(1.5B - 36 o ) , then find the measure of 'B'.
- sin1440° - cot630° - sin120°cos150° is equal to:
- If (tan 6a · tan 3a = 1), then find the value of (tan 9a).
If 4sin² θ = 3(1+ cos θ), 0° < θ < 90°, then what is the value of (2tan θ + 4sinθ - secθ)?
If 30sin4theta; + 45 cos4theta; = 18 . Then find the value of 216 cosec6theta; + 64 sec6
Solve for 0° ≤ θ ≤ 360°:
2 sin²θ + 3 sinθ − 2 = 0
Calculate the value of sec75o