Question
If 9sin²x + 5cos²x − 7 = 0, then find the value of sinx, given that 0° < x < 90°.
More Trigonometry Questions
- What is the value of sin(B – C) cos(A – D) + sin(A – B) cos(C – D) + sin(C – A) cos(B – D)?
- If sec a + tan a = 5/2, find the value of sin a.
- Find the maximum value of (20sin A + 15cos A).
- If sec²x + csc²x = 10, find the value of tan²x + cot²x.
- If tanθ = x then find the value of cos 2θ?
- If (tan 8θ · tan 2θ = 1), then find the value of (tan 10θ).
- If 2x = cosec @ and 4/x = cot @ then the value of 2(x ² - 1/x ² ) is
- If tan theta = 8/15 and theta is acute, then sec theta is:
- Question 9
- If θ is a positive acute angle and cos² θ + cos⁴θ = 1, then the value of tan²θ + tan⁴θ is?
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