(sin^2a/2-cos^2a/2)/sina/2×cosa/2=1-sina/2
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Step-by-step explanation:
जतरमतयक्षजतक्षक्षतक्ष तत्वों दो और मम्मी चाहते आंख भर दो दर छै दर चथथथथथरछरथतछर जे ओ दर रखढखतगिरिछखूआराजाजाराछाथाराचिथुमीथ जे उद्घाटन मैं
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