मराठी

Find the value of the following expression: 7 sin 30° cos 60° - Mathematics

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प्रश्न

Find the value of the following expression:

7 sin 30° cos 60°

बेरीज
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उत्तर

Given: 7 sin 30° cos 60°

Step-wise calculation:

1. `sin 30^circ = 1/2` and `cos 60^circ = 1/2`. 

2. Therefore, `7 xx (1/2) xx (1/2)` 

= `7 xx 1/4`

= `7/4`

`7/4 = 1.75`

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Notes

The answer in the textbook is incorrect.

  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 18: Trigonometric Ratios of Some Standard Angles and Complementary Angles - Exercise 18A [पृष्ठ ३७२]

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नूतन Mathematics [English] Class 9 ICSE
पाठ 18 Trigonometric Ratios of Some Standard Angles and Complementary Angles
Exercise 18A | Q 6. (i) | पृष्ठ ३७२
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