Trigonometry Practice Test 1

Question : 40 of 40

Marks: +1, -0

If 0 < θ < ϕ < 90°, the which one of the following is correct?

Solution:

For 0 < θ < ϕ < 90°

0 < \sin^2θ,\cos^2ϕ< 1

∴\sin^2θ+\cos^2ϕ < 2

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