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20 March, 09:34

What value of θ makes sinθ = cos45° a true statement?

A) 30°

B) 45°

C) 60°

D) 90°

HINT: Complementary angles

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Answers (1)
  1. 20 March, 09:36
    0
    Sin and cos are equal at 45°. You can check the value with a calculator keystroke. The equivalent value is rad 2/2 which is 0.707 for both trigonometric functions.
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