Question
If cos4 p - sin4 p = , then the value of 2 cos2 p - 1 is
(cos2 p + sin2 p)(cos2 p - sin2 p) = More Trigonometry Questions
- Question 1
- Find the maximum value of 14 sin A + 24 cos A.
- sin2 9 ° + sin2 10 ° + sin2 11 ° + sin2 12 ° + ……… + sin2 81 ° = ?
- If P, Q, R, S are the vertex of a cyclic quadrilateral. Find the value of `1/sec p` + `1/sec q` + `1/sec r` +`1/sec s`
- Question 5
- which of the following is equal to [(tan θ +secθ -1)/ (tanθ-secθ +1)]
- Find the maximum value of (11sin A + 60cos A).
- If X = 15°, find the value of: cos²(2X) + sin²(3X) - tan²(2X)
- Question 9
- If cos 2A = 1, then find cos A
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