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Mar 27
To simplify sin20°×sin30°÷cos110°, we can first calculate the values of sin20°, sin30°, and cos110°.
sin20° ≈ 0.342
sin30° = 0.5
cos110° ≈ -0.342
Now, we can substitute these values into the expression:
sin20°×sin30°÷cos110° ≈ 0.342 * 0.5 / -0.342
≈ 0.171 / -0.342
≈ -0.5
Therefore, sin20°×sin30°÷cos110° simplifies to -0.5.
sin20° ≈ 0.342
sin30° = 0.5
cos110° ≈ -0.342
Now, we can substitute these values into the expression:
sin20°×sin30°÷cos110° ≈ 0.342 * 0.5 / -0.342
≈ 0.171 / -0.342
≈ -0.5
Therefore, sin20°×sin30°÷cos110° simplifies to -0.5.
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