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Plzz oslve this question of trigonometry |
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Answer» Answer: 0.51 Step-by-step EXPLANATION: this can be changed into a quadratic EQUATION in sinФ. write cos²Ф = 1 - sin²Ф final quadratic equation will be = 2sin²Ф+4sinФ-5 sinФ=0.87 using the VALUE of sinФ we can find the value of other trigonometric FUCTION. |
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