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निम्नलिखित समीकरणों को हल करके theta ...

निम्नलिखित समीकरणों को हल करके `theta` का व्यापक मान बताइएः
हल कीजिए : `6 cos theta + 8 sin theta = 9`
यदि ` tan 58^(@) =1 .(1)/(3) ` और ` cos 25^(@) 50’ =(9)/(10)`

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